EP1848929A1 - Appareil de ventilation avec vanne de réglage en fonction de la pression - Google Patents

Appareil de ventilation avec vanne de réglage en fonction de la pression

Info

Publication number
EP1848929A1
EP1848929A1 EP05710915A EP05710915A EP1848929A1 EP 1848929 A1 EP1848929 A1 EP 1848929A1 EP 05710915 A EP05710915 A EP 05710915A EP 05710915 A EP05710915 A EP 05710915A EP 1848929 A1 EP1848929 A1 EP 1848929A1
Authority
EP
European Patent Office
Prior art keywords
ventilating
leg
valve body
pivot
closing
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.)
Withdrawn
Application number
EP05710915A
Other languages
German (de)
English (en)
Inventor
Andreas Wilhelmus Jozef Meester
Adrianus Jacobus Zwaan
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.)
Alusta Natuurlijke Ventilatietechniek BV
Original Assignee
Alusta Natuurlijke Ventilatietechniek BV
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 Alusta Natuurlijke Ventilatietechniek BV filed Critical Alusta Natuurlijke Ventilatietechniek BV
Publication of EP1848929A1 publication Critical patent/EP1848929A1/fr
Withdrawn legal-status Critical Current

Links

Classifications

    • 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

  • This invention relates to a ventilating apparatus provided with a substantially block-shaped housing with a first wall break and a second wall break, between which extends a ventilating channel, while at least one valve body is present for pressure-dependently regulating the free passage of the ventilating channel, for which purpose the valve body is designed as a body arranged to be substantially freely rotatable about a pivot and provided with legs which are so arranged with respect to the pivot that, at least in an initial position, a leg extends in the flow direction of the ventilating air through the ventilating channel.
  • a ventilating apparatus for instance known from
  • the valve body is designed as a substantially L-shaped body, of which, in the initial position, one leg extends from the pivot in the air flow direction and the other leg extends more or less perpendicular thereto.
  • one of the legs In the initial position, one of the legs extends more or less transversely in the ventilating channel, which means that the true passage, also in that position of the valve body, is considerably smaller than the possible passage of that ventilating channel, that is, this always involves a considerable loss of ventilation capacity. Further, in the case of low pressure differences, the self -regulating power of such a valve body is to be qualified as unsatisfactory.
  • the object of the invention is for a ventilating apparatus of the type described in the opening paragraph hereof to be designed so as to have a quickly responsive self -regulating power for the purpose of keeping the ventilation capacity equal as much as possible, and also at low pressures, while a further aim is to keep the loss of ventilation capacity as small as possible.
  • the valve body is provided with at least two closing legs and an initiating leg, while one of the closing legs in the initial position extends in and opposite to the flow direction of the ventilating air through the ventilating channel, with respect to which leg a further closing leg and an initiating leg are arranged so as to diverge in a V-shape.
  • the air flow in the ventilating channel is split into two by the closing leg extending in and opposite to the flow direction of the ventilating air.
  • the other closing leg and the initiating leg provide for the deflection of a respective partial flow in a manner raising only minor resistances and thus leading to just minor losses of ventilation capacity.
  • the initiating leg will cause the valve body to rotate, with the result that also the closing leg pointing into the ventilating channel against the flow, pivots, so that the passing air will act on that closing leg, more specifically with a component acting in the closing direction.
  • the pivot for the valve body viewed in the flow direction of the air in the ventilating channel, is placed in the outflow mouth area or just behind it.
  • the ventilating channel is of widening design.
  • the free passage is not reduced until such is required from a viewpoint of control, so that, in addition to an optimization of the shape of the flow paths, also a maximization of the passage is obtained, resulting in a minimization of the loss of ventilation capacity compared with the situation without self-regulating valve body.
  • valve body hangs from its pivot in balance, with the first closing leg in a generally horizontal position resulting from a correspondingly chosen weight distribution of the valve body.
  • the valve body By its self -regulating operation, upon increase of the pressure difference the valve body is forced from its initial position by the air flow. When the pressure subsequently decreases again, the valve body is to move back in the direction of its initial position again by action of gravity.
  • the valve body comprises a hollow tube which carries the legs and is arranged to be eccentrically rotatable relative to the centerline of the pivot.
  • the eccentric rotation point of the hollow tube is in the upper area thereof.
  • the greater part of the hollow tube will hang under and laterally of the pivot, which affords excellent possibilities of setting the return pressure force.
  • the hollow tube will be situated more and more laterally of the pivot, so that the resetting couple resulting from action of gravity is augmented.
  • the eccentric arrangement of the hollow tube can be realized in a simple but effective manner if the hollow tube is provided with end caps in which eccentrically with respect to the centerline of the hollow tube, bores are provided for accommodating a journal.
  • This embodiment has the additional advantage that the hinge areas, which are fairly short with respect to the length of the valve body, raise minor friction, which promotes quick response of the regulation at low pressure differences.
  • the valve body According as the pressure difference between the outside and inside increases, the valve body will be rotated further and further towards a closing position. At the end of that rotation, the initially horizontal leg will butt against a stop.
  • at least that closing leg is provided with at least one elastic part arranged locally and, viewed in the direction of the pivot, over the full width of the leg.
  • an elastic part in the leg coming to a stop further has the particular additional effect that this leg, upon the pressure difference rising still further, can bend in the elastic area, as a result of which the valve body rotates a bit further still and the residual slit diminishes, so that an additional control range for regulating a constant flow of ventilating air can be obtained.
  • the closing leg comes to a stop against an elastically designed wall part of the ventilating channel.
  • the ventilating apparatus may be further provided with a conventional closing valve operable by hand or a motor, allowing the ventilating apparatus to be regulated and closed independently of the pressure difference between the outside and inside.
  • valve body In general, given normal operation and assembly of the valve body, this valve body in its initial position will hang balanced in the proper position and pivot to the closing position upon increasing pressure difference. However, to allow, for instance, for inaccuracies involved in building in, it may further be preferred that it has been provided through stop means that the valve body can pivot from its initial position in one direction only. Thus, it can always be ensured that the valve body can pivot from the initial position only in the direction determined by the initiating leg.
  • the ventilating apparatus according to the invention will presently be elucidated in more detail with reference to an embodiment which is represented, though exclusively by way of non -limiting example, in the single figure of the drawing.
  • the single figure shows the ventilating apparatus in transverse cross section.
  • the ventilating apparatus is provided with an elongated, block-shaped housing 1, in which, by means of housing parts and sound-damping material, a ventilating channel 2 is defined, extending from an outer mouth 3 to an inner mouth 4.
  • the housing 1 is provided with partly shown conventional provisions for mounting the ventilating apparatus in for instance a window frame or a wall. Further, a broken line schematically indicates a closing valve 5 which in a well known manner can be set by hand or a motor between a fully open position and, as indicated with the broken line, a fully closed position. Further, on the side of the inner mouth 4, the housing 1 is provided with an attachment unit 6, which is detachably mounted by means of well known connections, as by snap-fitting or with screws.
  • the closing leg 12 is composed of two plate parts, and an elastic part 15 connecting these. By means of blocking or stop provisions (not shown), the closing leg 12 can be prevented from pivoting upwards from the initial position shown in the figure.
  • Shape, dimensions and material of the constituent parts of the valve body 10 are chosen such that in the case of no or only a very low pressure difference, for instance up to 1 Pascal, between the outer mouth 3 and the inner mouth 4, the valve body 10 is going to hang in the initial position designated with solid lines in the figure.
  • Air flowing through the ventilating channel 2 will not or hardly experience any resistance from the closing leg 12 extending straight against it, but will be divided into two partial flows which are thereupon deflected by the closing leg 13 and the initiating leg 14, respectively, in the direction of the upper outflow opening 7 and the lower outflow opening 8, respectively.
  • the valve body 10 will have rotated so far that the closing leg 12 comes into contact with the wall of the ventilating channel 2, which position of the valve body is indicated with a partly broken single line. As indicated, in that position, at the end of the closing leg 13 a slit will be left, so that the supply of fresh ventilating air is always ensured. If for some reason it is desired for the air supply to be closed off completely, this can be realized by means of the closing valve 5.
  • the closing leg 12 Upon a still further increase of the pressure difference, it will be possible for the closing leg 12, due to the presence of the elastic part 15, to proceed to bend to some extent, whereby the residual slit adjacent the closing leg 13 diminishes, which promotes the regulation of a constant amount of supplied ventilating air.
  • a same effect could be achieved by making the wall of the ventilating channel 2 of elastic design at the point where the closing leg 12 strikes it.
  • the elastic part 15 in the closing leg 12 can then be omitted or not.
  • the positive influence of the hollow tube on the resetting couple has been discussed. It is also possible, however, to use a more common hinge construction and, for instance, to fit a counterweight to the initiating leg.
  • the hollow tube 11 represented has a circular cross section. It will be clear that this can also be any other desired and suitable shape, such as an oval or a triangle.
  • the pivot 9 is situated somewhat upstream of the inner mouth 4. That pivot can also, if necessary with modification of the design of the legs 13 and 14, be situated in the ventilating channel 2. Also, for regulating the air flow, the direction of rotation of the valve body can be reversed by corresponding design and dimensioning. In the embodiment shown, the valve body is accommodated in a separate unit to be coupled-on.
  • valve body can also be accommodated in the housing without separate unit.
  • upper and lower outflow openings are shown. Of course, these can also be replaced or combined with outflow openings in the end face.

Landscapes

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

Abstract

L'invention concerne un appareil de ventilation équipé d'un carter (1) sensiblement en forme de bloc avec une buse de ventilation (2) s'étendant à l'intérieur, sachant qu'on trouve au moins un corps de vanne pour régler en fonction de la pression le libre passage de la buse de ventilation, et que dans ce but le corps de vanne est conçu comme un corps disposé pour pouvoir dans l'ensemble tourner librement autour d'un pivot (9) et pourvu d'au moins deux pattes de fermeture (12, 13) et d'une patte d'amorçage (14), sachant que dans la position initiale une des pattes de fermeture s'étend dans le sens d'écoulement de l'air de ventilation à travers la buse de ventilation et dans le sens opposé et que par rapport à ladite patte une autre patte de fermeture et une patte d'amorçage sont disposées de façon à diverger en V. Le pivot pour le corps de vanne, vu dans le sens d'écoulement de l'air dans la buse de ventilation, est placé de préférence dans la zone de la bouche d'écoulement ou juste après elle.
EP05710915A 2005-02-18 2005-02-18 Appareil de ventilation avec vanne de réglage en fonction de la pression Withdrawn EP1848929A1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/NL2005/000142 WO2006088352A1 (fr) 2005-02-18 2005-02-18 Appareil de ventilation avec vanne de réglage en fonction de la pression

Publications (1)

Publication Number Publication Date
EP1848929A1 true EP1848929A1 (fr) 2007-10-31

Family

ID=35872689

Family Applications (1)

Application Number Title Priority Date Filing Date
EP05710915A Withdrawn EP1848929A1 (fr) 2005-02-18 2005-02-18 Appareil de ventilation avec vanne de réglage en fonction de la pression

Country Status (4)

Country Link
EP (1) EP1848929A1 (fr)
BE (1) BE1016994A3 (fr)
NL (1) NL1031172C2 (fr)
WO (1) WO2006088352A1 (fr)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL2007385C2 (nl) * 2011-09-09 2013-12-31 Alusta Natuurlijke Ventilatietechniek B V Ventilatie-inrichting met drukafhankelijk zelfregelende klep.
BE1024668B1 (nl) * 2016-10-20 2018-05-24 Renson Ventilation Nv Ventilatie-inrichting

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1484576A (fr) 1966-06-27 1967-06-09 Vanne de régulation automatique, notamment pour installations de ventilation
FR2050714A6 (fr) * 1969-06-23 1971-04-02 Barbarin Joseph
SE396250B (sv) * 1975-04-29 1977-09-12 Stifab Ab Regulatoranordning avsedd att inga i en fluidstrombana, t ex luftstromningsbana
NL194309C (nl) 1990-12-20 2001-12-04 Heycop Systemen B V Zelfregelende debietregelklep voor een ventilatiesysteem.
FR2740865B1 (fr) * 1995-11-02 1997-12-19 Barbarin Laurent Bouche d'entree d'air autoreglable a obturateur en equerre pour installation de ventilation

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO2006088352A1 *

Also Published As

Publication number Publication date
WO2006088352A1 (fr) 2006-08-24
NL1031172C2 (nl) 2006-08-22
BE1016994A3 (nl) 2007-11-06

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