FR2477665A1 - AUTOMATIC CONTROL VALVE - Google Patents
AUTOMATIC CONTROL VALVE Download PDFInfo
- Publication number
- FR2477665A1 FR2477665A1 FR8104440A FR8104440A FR2477665A1 FR 2477665 A1 FR2477665 A1 FR 2477665A1 FR 8104440 A FR8104440 A FR 8104440A FR 8104440 A FR8104440 A FR 8104440A FR 2477665 A1 FR2477665 A1 FR 2477665A1
- Authority
- FR
- France
- Prior art keywords
- plate
- valve
- air
- control valve
- shaft
- 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.)
- Granted
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
- 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
- F24F13/1426—Air-flow control members, e.g. louvres, grilles, flaps or guide plates movable, e.g. dampers built up of tilting members, e.g. louvre characterised by actuating means
-
- 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
-
- 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
- F24F13/08—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
- F24F13/1486—Air-flow control members, e.g. louvres, grilles, flaps or guide plates movable, e.g. dampers built up of tilting members, e.g. louvre characterised by bearings, pivots or hinges
Landscapes
- 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)
- Lift Valve (AREA)
- Control Of Throttle Valves Provided In The Intake System Or In The Exhaust System (AREA)
- Fluid-Driven Valves (AREA)
Abstract
A.LA SOUPAPE DE REGLAGE AUTOMATIQUE EST DESTINEE A PERMETTRE LE PASSAGE D'UN VOLUME D'AIR ESSENTIELLEMENT CONSTANT PAR UNITE DE TEMPS, COMPRENANT UNE PLAQUE FORMANT SOUPAPE MONTEE SUR UN AXE HORIZONTAL POUR TOURNER DANS UN BOITIER. B.LA SURFACE DE LA PLAQUE 2 COUVRE UN PLUS GRAND POURCENTAGE DE LA SECTION DE LA CAGE 1 DE SOUPAPE AU-DESSUS D'UN PLAN QUI DIVISE LA SECTION EN DEUX PARTIES EGALES, QU'EN DESSOUS DE CE PLAN. C.INVENTION APPLICABLE AU REGLAGE D'UN DEBIT D'AIR DANS DES SYSTEMES DE VENTILATION.A. THE AUTOMATIC ADJUSTMENT VALVE IS INTENDED TO ALLOW THE PASSAGE OF A ESSENTIALLY CONSTANT VOLUME OF AIR PER UNIT OF TIME, INCLUDING A VALVE PLATE MOUNTED ON A HORIZONTAL AXIS FOR ROTATION IN A HOUSING. B. THE SURFACE OF PLATE 2 COVERS A GREATER PERCENTAGE OF THE SECTION OF VALVE CAGE 1 ABOVE A PLANE WHICH DIVIDES THE SECTION INTO TWO EQUAL PARTS THAN BELOW THIS PLANE. C. INVENTION APPLICABLE TO THE ADJUSTMENT OF AN AIR FLOW IN VENTILATION SYSTEMS.
Description
L'invention concerne une soupape automatique de réglage pour des systèmesAn automatic control valve for systems
de ventilation o la soupape permet le passage d'un volume d'air essentiellement constant par unité de temps, avec une différence de pression variable entre le côté de l'air entrant et le cOté de l'air sortant,qui inclut une plaque formant soupape, montée à pivot sur un axe horizontal dans le bottier de la soupape et des moyens pour neutraliser le déplacement de la plaque vers une position de fermeture, la partie de la plaque formant soupape logée au-dessus de l'axe tournant oscille en direction du courant de l'air et vers un plan vertical quand la plaque pivote vers une position de fermeture. Le problème avec des soupapes de commande de cette nature est que la force de fermeture résultant du courant d'air engendré augmente franchement quand la plaque approche de sa position de fermeture provoquant la fermeture brusque de la soupape. Afin de prévenir une telle fermeture brusque de la o the valve allows the passage of a substantially constant volume of air per unit of time, with a variable pressure difference between the incoming air side and the outgoing air side, which includes a plate forming valve, pivotably mounted on a horizontal axis in the valve housing and means for neutralizing movement of the plate to a closed position, the portion of the valve plate housed above the rotating axis oscillates in the direction of from the air stream and to a vertical plane when the plate pivots to a closed position. The problem with control valves of this nature is that the closing force resulting from the air flow generated increases frankly as the plate approaches its closed position causing the valve to close abruptly. In order to prevent such a sudden closure of the
soupape, on a suggéré que la rotation de la plaque soit neutra- valve, it has been suggested that the rotation of the plate should be neutral
lisée par un dispositif à ressort dont la force de neutralisa- by a spring device whose neutralizing force
tion augmente progressivement avec l'augmentation de la force de fermeture. Une telle disposition cependant n'est pas sûre et la constante élastique du dispositif varie après que la plaque formant soupape est restée en usage pendant un temps plus ou moins long et ensuite il se produira une période o la plaque recommencera à claquer en se fermant, provoquant un fort bruit dans le système de ventilation et une perturbation dans gradually increases with increasing closing force. Such an arrangement however is not safe and the elastic constant of the device varies after the valve plate has remained in use for a longer or shorter time and then there will occur a period where the plate will start to snap again when closing, causing a loud noise in the ventilation system and a disturbance in
Je courant de l'air.I run from the air.
Pour essayer de vaincre ce désagrément, la plaque formant soupape a été munie d'une languette qui se trouve dans le courant de l'air et qui augmente la force nécessaire pour la fermeture quand la soupape est ouverte et diminue cette force progressivement quand la plaque formant soupape se déplace vers la position de fermeture. Une telle languette est décrite et illustrée dans le brevet suédois ne 302 677 et fonctionne très bien, mais sa fabrication est couteuse et sa position doit être ajustée avec précision par rapport au niveau de la plaque In an attempt to overcome this inconvenience, the valve plate has been provided with a tab which is in the air flow and which increases the force required for closing when the valve is opened and decreases this force gradually when the plate forming valve moves to the closed position. Such a tongue is described and illustrated in Swedish Patent No. 302,677 and works very well, but its manufacture is expensive and its position must be adjusted accurately with respect to the plate level.
formant soupape.forming a valve.
L'objet de l'invention est en conséquence de proposer une soupape du type décrit ci-dessus et pouvant être fabriquée à bon marché, fonctionnant avec efficacité aussi bien que la The object of the invention is therefore to provide a valve of the type described above and can be manufactured cheaply, operating with efficiency as well as the
2 24776652 2477665
soupape de l'art antérieur à l'aide d'une languette de guidage valve of the prior art using a guide tongue
sur la plaque formant soupape.on the valve plate.
L'invention sera maintenant décrite, avec références aux dessins annexes, o - la figure 1 est une vue en coupe axiale d'une soupape de régulation connue, montrant l'action des forces sur la plaque formant soupape, - la figure 2 est une vue identique à la figure 1, mais en accord avec la plaque formant souppape de l'invention, - la figure 3 est une vue d'un dispositif de la soupape, montréeen figure 2, vu vers l'extrémité sortie, - la figure 4 est une vue de la plaque formant soupape du dispositif des figures 2 et 3, vue dans sa position fermée, - la figure 5 montre une modification d'une plaque formant soupape du dispositif de soupape, montré en figures 2 et 3 et - les figures 6 et 7 montrent enfin un-mode de The invention will now be described with reference to the accompanying drawings, wherein: FIG. 1 is an axial sectional view of a known control valve, showing the action of the forces on the valve plate, FIG. FIG. 3 is a view of a device of the valve, shown in FIG. 2, seen towards the exit end, FIG. 4 Fig. 5 shows a modification of a valve plate of the valve device, shown in Figs. 2 and 3; and Figs. 6 and 7 finally show a-mode of
réalisation de plaques de soupape selon l'invention. embodiment of valve plates according to the invention.
La figure 1 montre, de manière simplifiée, le principe opératoire d'une soupape connue de régulation dans laquelle l'air est forcé de circuler dans la direction montrée par la flèche, destinée à permettre à une quantité constante d'air de la traverser, quelle que soit la perte de charge à la Figure 1 shows, in a simplified manner, the operating principle of a known control valve in which the air is forced to flow in the direction shown by the arrow, intended to allow a constant amount of air to pass through it, whatever the pressure drop at the
soupape.valve.
Une plaque formant soupape 2 est montée rotative sur un axe horizontal 3 dans le boîtier de la soupape. L'axe 3 comporte, pour sa rotation, un palier à faible friction (non montré), par exemple des roulements à billes. Relié à l'axe 3 ou à la plaque 2 se trouve un bras 4 qui porte à une extrémité un contrepoids 5. Le but principal du contrepoids 5 et du bras 4 est de produire une force de rotation M2 qui neutralise le déplacement de fermeture de la plaque formant soupape quand il est provoqué par la force M1, c'est-à-dire par le couple produit par le courant d'air dans la soupape. Comme il est bien connu, cette force M1 résulte du fait que, si la plaque formant soupape se trouve dans la position relative montrée 'par rapport au courant d'air, la vitesse du courant de l'air V3 sur la face avant de la plaque à son bord supérieur est plus grande que la vitesse du courant V4 sur la face avant dans la partie de son bord inférieur, et si la vitesse du courant V1 sur la face arrière de la plaque, au voisinage de son bord inférieur est plus grande que la quantité du courant sur la face arrière de la plaque dans le voisinage de son bord supérieur; en utilisant les relations connues des pressions statiques appliquées à A valve plate 2 is rotatably mounted on a horizontal axis 3 in the valve housing. The axis 3 comprises, for its rotation, a low friction bearing (not shown), for example ball bearings. Connected to the axis 3 or the plate 2 is an arm 4 which carries at one end a counterweight 5. The main purpose of the counterweight 5 and the arm 4 is to produce a rotation force M2 which neutralizes the closing movement of the valve plate when it is caused by the force M1, that is to say by the torque produced by the air flow in the valve. As is well known, this force M1 results from the fact that, if the valve plate is in the relative position shown with respect to the air stream, the velocity of the air stream V3 on the front face of the plate at its upper edge is greater than the speed of the current V4 on the front face in the part of its lower edge, and if the speed of the current V1 on the rear face of the plate, in the vicinity of its lower edge is greater that the amount of current on the back side of the plate in the vicinity of its upper edge; using the known relations of the static pressures applied to
l'air, on peut alors écrire P3 _ P4 et Pi o: P2. air, we can then write P3 _ P4 and Pi o: P2.
Pour une position de la plaque formant soupape, le volume de l'air dans le passage augmente avec l'augmentation For a position of the valve plate, the volume of air in the passage increases with increasing
de la perte de charge au travers de la plaque formant soupape 2. of the pressure drop across the valve plate 2.
Quand la perte de charge augmente, cela signifie une augmentation de la force de rotation M1 qui oblige la plaque à tourner vers sa position de fermeture. Quand la plaque se déplace vers la position de fermeture, illustrée en figure 1, par un pointillé, la force M2 contraire augmentera en même temps, comme montré When the pressure drop increases, it means an increase in the rotational force M1 which forces the plate to turn towards its closed position. When the plate moves towards the closed position, illustrated in FIG. 1, by a dotted line, the opposite force M2 will increase at the same time, as shown
en figure 1.in Figure 1.
Comme résultat des effets de bord, la force M1 de fermeture de la soupape augmentera plus ou moins brutalement quand la plaque formant soupape 2 atteindra le voisinage de sa position de fermeture, pendant que la force M2 contraire suivra une fonction sinus. Comme conséquence, la plaque formant soupape se fermera rapidement et sera arrêtée par un épaulement 13 et As a result of edge effects, the closing force M1 of the valve will increase more or less sharply when the valve plate 2 reaches the vicinity of its closed position, while the opposite force M2 will follow a sine function. As a result, the valve plate will close quickly and be stopped by a shoulder 13 and
par contact avec la soupape du boîtier 1. by contact with the housing valve 1.
L'action de l'effet de bord se produisant au voisinage de la position de fermeture de la soupape peut être éliminée en réduisant la force M1, selon l'invention, ce qui permet d'obtenir un effet de balancement grâce à la force M2 contraire, si bien que la plaque formant soupape se déplace The action of the edge effect occurring in the vicinity of the closed position of the valve can be eliminated by reducing the force M1, according to the invention, which makes it possible to obtain a rocking effect thanks to the force M2 contrary, so that the valve plate moves
doucement sur toute l'étendue de son rayon de déplacement. gently over the entire radius of its movement.
L'invention est basée sur l'idée de provoquer un accroissement de la quantité d'air passant sur le côté de dessous de la plaque 2 proportionnel au débit d'air passant The invention is based on the idea of causing an increase in the amount of air passing on the underside of the plate 2 proportional to the flow of air passing through
sur le côté de dessus de celle-ci et au voisinage de la région. on the top side of it and in the vicinity of the area.
de fermeture de la plaque formant soupape, c'est-à-dire que la vitesse du courant d'air augmente sur le côté de dessous de la plaque (la pression statique décroît) et décroît sur le closing of the valve plate, i.e. the speed of the air flow increases on the underside of the plate (the static pressure decreases) and decreases on the
côté supérieur de la plaque (la pression statique croit). upper side of the plate (the static pressure increases).
Cela veut dire que la force M1 de fermeture décroît quand la plaque approche de sa position de fermeture et que la force M2 qui la neutralise peut être adaptée, si bien qu'un bras pesant ou un bras chargé par un ressort puisse produire un This means that the closing force M1 decreases when the plate approaches its closed position and that the force M2 which neutralizes it can be adapted, so that a heavy arm or a spring-loaded arm can produce a spring.
courant donné d'air indépendamment de la chute de pression. given current of air regardless of the pressure drop.
L'augmentation du débit d'air, mentionnéeeci-désss, passant en dessous de la plaque formant soupape, (la plaque ayant la direction de fermeture montrée en figure 1), peut être obtenue en diminuant la surface de la partie de la plaque 2 située sous l'axe 3. Les figures 2, 3 et 4 montrent une plaque plate 2 de forme elliptique dont les parties marginales 8', 9' (figure 4) ont été recourbées à angle droit par rapport au plan de la plaque dans la direction du courant pour former les parties 8 et 9. Cette disposition diminue la surface de la partie de la plaque située en dessous de l'arbre 3 se traduit par une surface de fermeture qui décroît en fonction de la surface plate située au-dessus de l'arbre 3, quand la plaque se déplace vers sa position de fermeture et avec cela aussi par The increase in the airflow, referred to above, passing below the valve plate, (the plate having the closing direction shown in FIG. 1), can be obtained by decreasing the surface of the part of the plate 2 3. Figures 2, 3 and 4 show a flat plate 2 of elliptical shape whose marginal portions 8 ', 9' (Figure 4) have been bent at right angles to the plane of the plate in the direction of the current to form the parts 8 and 9. This provision decreases the surface of the part of the plate located below the shaft 3 is reflected by a closure surface which decreases as a function of the flat surface located above the shaft 3, when the plate moves towards its closed position and with this also by
un effort plus faible au voisinage de la position de fermeture. a lower force in the vicinity of the closed position.
La réduction de la.surface de fermeture de la plaque à proximité de sa position de fermeture peut aussi être exécutée en coupant la partie effilée la plus basse de l'ellipse, montrée en figure 4, ou par suppression complète des The reduction of the closing surface of the plate near its closed position can also be performed by cutting the lowest tapered portion of the ellipse, shown in FIG. 4, or by completely removing the
parties 8' et 9', au lieu de les courber de la façon indiquée. parts 8 'and 9', instead of bending them as indicated.
La partie inférieure de la plaque formant soupape peut aussi être pourvue d'ouvertures 10, 11, 12, comme montré en figure 5, pour accroître la vitesse du courant dans la zone de fermeture The lower portion of the valve plate may also be provided with openings 10, 11, 12, as shown in FIG. 5, to increase the speed of the current in the closure zone.
de la plaque formant soupape.of the valve plate.
Une modification non linéaire des fentes de passage du courant, c'est-àdire des fentes entre le boîtier 1 et les parties de la plaque situées en dessous et au-dessus de l'axe 3 peut aussi être réalisée en plaçant l'arbre 3 au-dessous du centre de la plaque formant soupape 2, ou en plaçant les paliers 6 et 7 au-dessus du centre de la plaque 2, tout en A non-linear modification of the current passage slots, that is, slots between the housing 1 and the parts of the plate below and above the axis 3 can also be achieved by placing the shaft 3 below the center of the valve plate 2, or by placing the bearings 6 and 7 above the center of the plate 2, while
conservant l'arbre 3 rotatif au centre du boîtier 1. keeping the rotary shaft 3 in the center of the housing 1.
La première disposition selon l'invention est illustrée en figure 6 qui montre une plaque ronde 2' formant soupape avec un axe 3' logé au-dessous du centre de la plaque, pendant que la dernière disposition selon l'invention, montrée en figure 7, o les emplacements des paliers 6, 7 sont décalés The first arrangement according to the invention is illustrated in FIG. 6 which shows a round plate 2 'forming a valve with an axis 3' housed below the center of the plate, while the last arrangement according to the invention, shown in FIG. , where the locations of the bearings 6, 7 are offset
par rapport à. l'arbre 3.compared to. the tree 3.
Quoique la plaque 2, formant soupape, est supposée être plane, on peut comprendre qu'elle pourrait présenter une courbe simple ou double. La forme de la plaque, formant soupape, Although the valve plate 2 is supposed to be flat, it can be understood that it could have a single or double curve. The shape of the plate, forming a valve,
24776652477665
et la forme de la section du conduit par o s'écoule le courant d'air n'ont pas d'importance pour l'invention, qui peut s'appliquer à un bottier rectangulaire avec une plaque également rectangulaire. and the shape of the duct section through which the flow of air flows does not matter for the invention, which can be applied to a rectangular box with a also rectangular plate.
6 - 24776656 - 2477665
Claims (4)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
SE8001750A SE441547B (en) | 1980-03-05 | 1980-03-05 | AUTOMATIC CONTROL VALVE FOR VENTILATION DEVICES |
Publications (2)
Publication Number | Publication Date |
---|---|
FR2477665A1 true FR2477665A1 (en) | 1981-09-11 |
FR2477665B1 FR2477665B1 (en) | 1986-05-16 |
Family
ID=20340429
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
FR8104440A Expired FR2477665B1 (en) | 1980-03-05 | 1981-03-05 | AUTOMATIC REGULATION VALVE |
Country Status (8)
Country | Link |
---|---|
CH (1) | CH654399A5 (en) |
DE (1) | DE3106964A1 (en) |
DK (1) | DK97681A (en) |
FI (1) | FI64995C (en) |
FR (1) | FR2477665B1 (en) |
GB (1) | GB2073404B (en) |
NO (1) | NO149560C (en) |
SE (1) | SE441547B (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2778229A1 (en) * | 1998-08-10 | 1999-11-05 | Robert Ribo | Air conditioning for building especially in multiple occupancy apartments |
WO2011004118A1 (en) * | 2009-07-10 | 2011-01-13 | Aldes Aeraulique | Pipe of circular overall cross section, fitted with an airflow rate regulating device |
Families Citing this family (12)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3143940A1 (en) * | 1981-11-05 | 1983-05-11 | Gebrüder Trox, GmbH, 4133 Neukirchen-Vluyn | VOLUME FLOW CONTROLLER FOR AIR TECHNICAL SYSTEMS |
FI69356C (en) * | 1983-05-20 | 1986-01-10 | Halton Oy | SAETT OCH ANORDNING FOER ATT GOERA INVERKAN AV TYNGDKRAFTEN LIA STOR I STROEMNINGSREGULATORER OBEROENDE AV MONTERINGSSA ETET |
FI72383C (en) * | 1983-05-20 | 1987-05-11 | Halton Oy | STROEMNINGSREGULATOR. |
FI69355C (en) * | 1983-05-20 | 1986-01-10 | Halton Oy | STROEMNINGSREGULATOR |
FI72384C (en) * | 1983-05-20 | 1987-05-11 | Halton Oy | STROEMNINGSREGULATOR OCH ANVAENDNING AV DENNA. |
GB2183788B (en) * | 1985-11-29 | 1989-10-04 | Coal Ind | Dampers |
IT1245079B (en) * | 1991-04-19 | 1994-09-13 | Weber Srl | MIXTURE SUPPLY DEVICE FOR AN INTERNAL COMBUSTION ENGINE, IN PARTICULAR FOR VEHICLES. |
DE4342880A1 (en) * | 1993-12-16 | 1995-06-22 | Krantz Tkt Gmbh | Device for applying a variable air volume flow to a room |
US6851255B2 (en) | 2002-12-18 | 2005-02-08 | Pratt & Whitney Canada Corp. | Normally open reverse flow flapper valve |
FR2938293B1 (en) * | 2008-11-12 | 2015-08-21 | Snecma | AIR FLOW CONTROL DEVICE SUPPLYING A TURBINE VENTILATION CAVITY OF A TURBOMACHINE TURBINE SECTION |
FR2955646B1 (en) * | 2010-01-26 | 2012-08-24 | Ge Energy Products France Snc | VENTILATION SYSTEM AND METHOD FOR TURBINE |
FR3009068B1 (en) * | 2013-07-23 | 2016-07-15 | Anjos Ventilation | DEVICE FOR CONTROLLING THE FLOW OF AIR IN A PIPING |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB377788A (en) * | 1931-06-11 | 1932-08-04 | Frank Leslie Cooper | Improvements in connection with ventilating systems |
US2388073A (en) * | 1941-04-29 | 1945-10-30 | Gen Electric | Fluid flow control |
US3240062A (en) * | 1962-12-05 | 1966-03-15 | Fredriksson Curt Johan | Flow-controlling apparatus |
SE302677B (en) * | 1965-06-28 | 1968-07-29 | O Fahre | |
DE2823735A1 (en) * | 1973-07-03 | 1979-12-06 | Emil Siegwart | Control of gaseous medium flow through pipe - uses flap bent near supporting shaft and acting against spring bias but never completely closing pipe cross=section |
-
1980
- 1980-03-05 SE SE8001750A patent/SE441547B/en not_active IP Right Cessation
-
1981
- 1981-02-25 FI FI810596A patent/FI64995C/en not_active IP Right Cessation
- 1981-02-25 DE DE19813106964 patent/DE3106964A1/en active Granted
- 1981-02-27 NO NO810670A patent/NO149560C/en unknown
- 1981-03-02 CH CH1375/81A patent/CH654399A5/en not_active IP Right Cessation
- 1981-03-02 GB GB8106462A patent/GB2073404B/en not_active Expired
- 1981-03-04 DK DK97681A patent/DK97681A/en not_active Application Discontinuation
- 1981-03-05 FR FR8104440A patent/FR2477665B1/en not_active Expired
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB377788A (en) * | 1931-06-11 | 1932-08-04 | Frank Leslie Cooper | Improvements in connection with ventilating systems |
US2388073A (en) * | 1941-04-29 | 1945-10-30 | Gen Electric | Fluid flow control |
US3240062A (en) * | 1962-12-05 | 1966-03-15 | Fredriksson Curt Johan | Flow-controlling apparatus |
SE302677B (en) * | 1965-06-28 | 1968-07-29 | O Fahre | |
DE2823735A1 (en) * | 1973-07-03 | 1979-12-06 | Emil Siegwart | Control of gaseous medium flow through pipe - uses flap bent near supporting shaft and acting against spring bias but never completely closing pipe cross=section |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2778229A1 (en) * | 1998-08-10 | 1999-11-05 | Robert Ribo | Air conditioning for building especially in multiple occupancy apartments |
WO2011004118A1 (en) * | 2009-07-10 | 2011-01-13 | Aldes Aeraulique | Pipe of circular overall cross section, fitted with an airflow rate regulating device |
FR2947887A1 (en) * | 2009-07-10 | 2011-01-14 | Aldes Aeraulique | CIRCULAR GENERAL SECTION CONDUIT EQUIPPED WITH A DEVICE FOR CONTROLLING AIR FLOW |
US8616242B2 (en) | 2009-07-10 | 2013-12-31 | Aldes Aeraulique | Pipe of circular overall cross section, fitted with an airflow rate regulating device |
Also Published As
Publication number | Publication date |
---|---|
FR2477665B1 (en) | 1986-05-16 |
DK97681A (en) | 1981-09-06 |
SE8001750L (en) | 1981-09-06 |
NO810670L (en) | 1981-09-07 |
DE3106964A1 (en) | 1982-01-28 |
GB2073404B (en) | 1984-10-03 |
FI64995B (en) | 1983-10-31 |
NO149560C (en) | 1984-05-09 |
SE441547B (en) | 1985-10-14 |
FI64995C (en) | 1984-02-10 |
NO149560B (en) | 1984-01-30 |
DE3106964C2 (en) | 1989-04-20 |
GB2073404A (en) | 1981-10-14 |
FI810596L (en) | 1981-09-06 |
CH654399A5 (en) | 1986-02-14 |
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