EP0180914A2 - Throttle valve for air conditioning systems - Google Patents

Throttle valve for air conditioning systems Download PDF

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Publication number
EP0180914A2
EP0180914A2 EP85113816A EP85113816A EP0180914A2 EP 0180914 A2 EP0180914 A2 EP 0180914A2 EP 85113816 A EP85113816 A EP 85113816A EP 85113816 A EP85113816 A EP 85113816A EP 0180914 A2 EP0180914 A2 EP 0180914A2
Authority
EP
European Patent Office
Prior art keywords
housing
turbulence
throttle valve
flap
valve according
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
Application number
EP85113816A
Other languages
German (de)
French (fr)
Other versions
EP0180914B1 (en
EP0180914A3 (en
Inventor
Josef Ing. Haaz
Wolfgang Ing. Finkelstein
Gregor Ing. Baumeister
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.)
Gebrueder Trox GmbH
Original Assignee
Gebrueder Trox 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 Gebrueder Trox GmbH filed Critical Gebrueder Trox GmbH
Publication of EP0180914A2 publication Critical patent/EP0180914A2/en
Publication of EP0180914A3 publication Critical patent/EP0180914A3/en
Application granted granted Critical
Publication of EP0180914B1 publication Critical patent/EP0180914B1/en
Expired legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • 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
    • 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
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F13/00—Details common to, or for air-conditioning, air-humidification, ventilation or use of air currents for screening
    • F24F13/24—Means for preventing or suppressing noise
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • 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
    • F24F2013/1473—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 with cams or levers

Definitions

  • the invention relates to a throttle valve for air conditioning systems in a housing which has a supply air connection and an exhaust air connection and a central axis of rotation for a flap which can be pivoted between an open position and a closed position.
  • throttle valves are known. They control the air flow to a room or the like. For this reason, throttle valves of this type are mostly designed as an actuator of a corresponding control. Because a throttle valve is to be used to control or regulate the air flow over a wide range until it is completely closed, flow conditions which favor the generation of low-frequency noises, in particular in the case of valve positions in the vicinity of the closed position, result.
  • the object of the invention is to improve a throttle valve of the type described above so that the generation of low-frequency noises avoided that, while at the same time the lowest possible pressure loss is aimed for in the open position.
  • At least one turbulence grille for suppressing large-volume turbulence bales is arranged in the flow direction behind the flap and outside the pivoting range of the flap.
  • a turbulence grille fixed to the housing is arranged, which extends at an angle to the direction of flow and ends in front of the central plane of the housing, which is defined by the axis of rotation, a further turbulence grille being arranged in the region of the opposite side of the housing and pivotable about an axis parallel to the axis of rotation as well as with its free edge over a handlebar is connected to the downstream portion of the valve.
  • the pivotable turbulence grille lies essentially in the direction of flow, so that it does not disturb the flow.
  • the pivotable turbulence grille can be pivotable about an axis which is arranged just below the housing wall.
  • the handlebar can be connected to the flap in the region of the downstream edge.
  • the turbulence grille fixed to the housing should be arranged at an angle of approx. 75 ° to the flow direction, because then the lowest flow losses occur and at the same time the most favorable effect with regard to the dissolution of large-volume turbulence bales is to be expected.
  • the turbulence grille can extend in the direction of flow in the region of the central plane of the housing and can be arranged fixed to the housing.
  • the turbulence grille does not interfere at all, especially when the flap is open. Nonetheless, turbulence bales, which arise when the flap is turned against the direction of flow, are detected and dissolved by the turbulence grille because the turbulence bales also extend beyond the central plane of the housing and thus reach the region of the turbulence grille.
  • the situation is further improved if further turbulence grids which are parallel and fixed to the housing are arranged on both sides of the central plane of the housing.
  • the length of the turbulence grids in the direction of flow depends on the respective flow rate. It should be so large that all turbulence bales entrained by the air flow are caught by the turbulence grids.
  • the turbulence grids can consist of perforated plates. Turbulence grids which have a free cross section between 30% and 70% of their area have proven to be particularly favorable.
  • the turbulence grids described are particularly effective in the case of a throttle valve, the flap of which is arranged at an angle of 60 ° to the central plane of the housing in the closing direction.
  • a supply air duct and an adjoining exhaust air duct with a larger cross section can also be formed in the housing, the flap being arranged in the supply air duct and the turbulence grille in the exhaust air duct.
  • the resulting sudden cross-sectional expansion in the transition area between the supply air duct and the exhaust air duct is harmless because the turbulence bales which are created there are also captured by the turbulence grids.
  • an arrangement is favorable in which the transition between the supply air duct and the exhaust air duct follows the line of contact between the supply air duct and the closed flap.
  • the throttle valve shown includes a housing 1 with a supply air connection 2, from which a supply air duct 3 extends.
  • An exhaust air duct 4 adjoins the supply air duct 3 and ends at an exhaust air connection 5.
  • the flap 7 can be designed as an actuator of a control system, not shown. Accordingly, an actuator (not shown) can act on the axis of rotation 6.
  • the flap 7 can be pivoted in the direction of the arrows 8 between an open position, which is shown with solid lines, and a closed position, which is shown with dash-dotted lines.
  • An arrow 9 indicates the direction of flow of air through the housing 1.
  • the exhaust air duct 4 has a larger cross section than the supply air duct 3.
  • the flap 7 has a base area such that, in the closed position, it makes an angle of approximately 60 ° to the central plane 10 of the housing 1.
  • the resulting line of contact 11 between closed flap 7 and supply air duct 3 practically also forms the end of supply air duct 3 or the transition between supply air duct 3 and exhaust air duct 4.
  • a turbulence grille 12 is attached below the central plane 10 on the inside of the exhaust air duct 4 and extends at an angle of approximately 75 ° to the flow direction to just below the central plane 10.
  • Another turbulence grille 13 is articulated above the central plane 10 and just below the inside of the exhaust air duct 4 with an axis 14 which extends parallel to the axis of rotation 6 of the flap 7.
  • the turbulence grille 13, which can be pivoted about the axis 14, is connected in the region of its free edge 15 to a link 16 which in turn is articulated to the flap 7 in the region of the downstream edge 17 thereof.
  • the turbulence grille 13 With increasing deflection of the flap 7 from the open position, the turbulence grille 13 is also pivoted about its axis 14 until, when the flap 7 is in the closed position, it assumes the position indicated by dash-dotted lines, in which the free edge 15 of the flap 7 is slightly above the central plane 10 .
  • the turbulence grids 12, 13 capture large-volume turbulence bales that come from the flap 7 set against the direction of flow and dissolve them into a large number of smaller turbulence bales. This effectively prevents the generation of low-frequency noise.
  • the same reference numerals designate the same parts.
  • the supply air duct 3 and the exhaust air duct 4 form the same cross sections.
  • a turbulence grating 18 is arranged, which extends approximately downstream from the axis of rotation 6 and parallel to the central plane 10.
  • further turbulence grids 19, 20 parallel thereto are arranged approximately halfway between the central plane 10 and the upper or lower housing wall, the beginning of which lies outside the pivoting range of the flap 7 and which extend parallel to the turbulence grille 18 or the central plane 10 .
  • the large-volume turbulence bales emanating from the flap 7 are also detected with these turbulence grids and broken down into a large number of small turbulence bales.
  • All of the turbulence grids shown consist of perforated sheets, the cross-section of which corresponds to approximately 30 to 70% of their area.

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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)
  • Communication Cables (AREA)

Abstract

1. Throttle valve for air-conditioning systems, having a housing (1) which includes an air inlet connection (2) and an air outlet connection (5) as well as a central pivot (6) for a valve flap (7) which is pivotable between an open position and a closed postion, a plurality of turbulence grids (18, 19, 20) being disposed, when viewed in the direction of flow, behind the valve flap (7) and outside of the pivotal range of the valve flap (7) to avoid large eddies, at least one of said grids extending in the direction of flow (9) in the region of the central plane (10) of the housing (1) and being disposed so as to be secured to the housing, characterised in that the other turbulence grids (19, 20) are disposed on either side of the central plane (10) of the housing (1) so as to be parallel thereto and are secured to the housing.

Description

Die Erfindung betrifft eine Drosselklappe für klimatechnische Anlagen in einem Gehäuse, welches einen Zuluftanschluß und einen Abluftanschluß sowie eine mittige Drehachse für eine Klappe aufweist, die zwischen einer Offenstellung und einer Schließstellung verschwenkbar ist.The invention relates to a throttle valve for air conditioning systems in a housing which has a supply air connection and an exhaust air connection and a central axis of rotation for a flap which can be pivoted between an open position and a closed position.

Derartige Drosselklappen sind bekannt. Mit ihnen wird der Luftstrom zu einem Raum oder dergleichen geregelt. Deswegen sind derartige Drosselklappen meistens als Stellglied einer entsprechenden Regelung ausgebildet. Weil mit einer Drosselklappe der Luftstrom über einen weiten Bereich bis zu völligem Abschluß gesteuert oder geregelt werden soll, ergeben sich insbesondere bei Klappenstellungen in der Nähe der Schließstellung Strömungszustände, die die Entstehung von niederfrequenten Geräuschen begünstigen.Such throttle valves are known. They control the air flow to a room or the like. For this reason, throttle valves of this type are mostly designed as an actuator of a corresponding control. Because a throttle valve is to be used to control or regulate the air flow over a wide range until it is completely closed, flow conditions which favor the generation of low-frequency noises, in particular in the case of valve positions in the vicinity of the closed position, result.

Aufgabe der Erfindung ist es, eine Drosselklappe der eingangs beschriebenen Gattung so zu verbessern, daß die Entstehung niederfrequenter Geräusche vermieden wird, wobei gleichzeitig in Offenstellung ein möglichst geringer Druckverlust angestrebt wird.The object of the invention is to improve a throttle valve of the type described above so that the generation of low-frequency noises avoided that, while at the same time the lowest possible pressure loss is aimed for in the open position.

Diese Aufgabe wird dadurch gelöst, daß in Strömungsrichtung hinter der Klappe und außerhalb des Schwenkbereichs der Klappe wenigstens ein Turbulenzgitter zum Unterdrücken großvolumiger Turbulenzballen angeordnet ist.This object is achieved in that at least one turbulence grille for suppressing large-volume turbulence bales is arranged in the flow direction behind the flap and outside the pivoting range of the flap.

Für die Entstehung niederfrequenter Geräusche sind hauptsächlich große Turbulenzballen, die im Abstrom einer gegen die Strömungsrichtung angestellten Klappe entstehen, verantwortlich. Wenn diese großvolumigen Turbulenzballen auf eine Strömungsrichtung hinter der Klappe angeordnetes Turbulenzgitter treffen, werden sie in eine Vielzahl kleiner Turbulenzballen aufgelöst, die gegebenenfalls zur Entstehung höherfrequenter Geräusche Anlaß geben können. Höherfrequente Geräusche werden aber durch die Luftkanäle selbst gedämpft oder können mit verhältnismäßig einfachen Maßnahmen unterdrückt werden. Durch die Auflösung großvolumiger Turbulenzballen in eine Vielzahl kleiner Turbulenzballen wird auch die Strömung hinter der ausgeschwenkten Klappe vergleichmäßigt und/oder gleichgerichtet.Large turbulence balls, which arise in the downstream of a flap set against the direction of flow, are mainly responsible for the generation of low-frequency noise. When these large-volume turbulence bales meet a turbulence grille arranged behind the flap in a flow direction, they are broken down into a large number of small turbulence bales which can give rise to higher-frequency noises if necessary. However, higher-frequency noises are damped by the air ducts themselves or can be suppressed with relatively simple measures. By dissolving large-volume turbulence bales into a large number of small turbulence bales, the flow behind the pivoted-out flap is also made more uniform and / or rectified.

Bei einer bevorzugten Ausführung ist ein gehäusefestes Turbulenzgitter angeordnet, das sich unter einen Winkel zur Strömungsrichtung erstreckt und vor der durch die Drehachse difinierten Mittelebene des Gehäuses endet, wobei im Bereich der gegenüberliegenden Gehäuseseite ein weiteres Turbulenzgitter angeordnet ist, das um eine zur Drehachse parallele Achse verschwenkbar sowie mit seiner freien Kante Uber einen Lenker an den stromabwärts liegenden Abschnitt der Klappe angeschlossen ist. Hier liegt das schwenkbare Turbulenzgitter bei Offenstellung der Klappe im wesentlichen in Strömungsrichtung, so daß es die Strömung nicht stört. Mit zunehmender Anstellung der Klappe gegen die Strömungsrichtung wird auch das Turbulenzgitter ausgeschwenkt, wobei es die mit zunehmender Anstellung ebenfalls wachsenden Turbulenzballen auffängt. Dabei kann das schwenkbare Turbulenzgitter um eine Achse schwenkbar sein, die dicht unterhalb der Gehäusewandung angeordnet ist. Der Lenker kann im Bereich der stromabwärts liegenden Kante der Klappe an diese angeschlossen sein. Das gehäusefeste Turbulenzgitter sollte unter einem Winkel von ca. 75° zur Strömungsrichtung angeordnet sein, weil dann die geringsten Strömungsverluste auftreten und gleichzeitig die günstigste Wirkung im Hinblick auf die Auflösung großvolumiger Turbulenzballen zu erwarten ist.In a preferred embodiment, a turbulence grille fixed to the housing is arranged, which extends at an angle to the direction of flow and ends in front of the central plane of the housing, which is defined by the axis of rotation, a further turbulence grille being arranged in the region of the opposite side of the housing and pivotable about an axis parallel to the axis of rotation as well as with its free edge over a handlebar is connected to the downstream portion of the valve. Here, when the flap is open, the pivotable turbulence grille lies essentially in the direction of flow, so that it does not disturb the flow. As the flap is turned against the direction of flow, the turbulence grille is also swung out, absorbing the turbulence balls that also grow as the flap increases. The pivotable turbulence grille can be pivotable about an axis which is arranged just below the housing wall. The handlebar can be connected to the flap in the region of the downstream edge. The turbulence grille fixed to the housing should be arranged at an angle of approx. 75 ° to the flow direction, because then the lowest flow losses occur and at the same time the most favorable effect with regard to the dissolution of large-volume turbulence bales is to be expected.

Bei einer anderen Ausführung kann das Turbulenzgitter sich in Strömungsrichtung im Bereich der Mittelebene des Gehäuses erstrecken und gehäusefest angeordnet sein. Hier stört das Turbulenzgitter insbesondere bei Offenstellung der Klappe überhaupt nicht. Gleichwohl werden Turbulenzballen, die bei zunehmender Anstellung der Klappe gegen die Strömungsrichtung entstehen, vom Turbulenzgitter erfaßt und aufgelöst, weil die Turbulenzballen sich auch bis über die Mittelebene des Gehäuses erstrecken und damit in den Bereich des Turbulenzgitters gelangen. Die Verhältnisse werden noch verbessert, wenn beidseits der Mittelebene des Gehäuses weitere dazu parallele und gehäusefeste Turbulenzgitter angeordnet sind. Die Länge der Turbulenzgitter in Strömungsrichtung richtet sich nach der jeweiligen Strömungsgeschwindigkeit. Sie sollte so groß sein, daß alle von dem Luftstrom mitgenommenen Turbulenzballen von den Turbulenzgittern erfaßt werden.In another embodiment, the turbulence grille can extend in the direction of flow in the region of the central plane of the housing and can be arranged fixed to the housing. Here the turbulence grille does not interfere at all, especially when the flap is open. Nonetheless, turbulence bales, which arise when the flap is turned against the direction of flow, are detected and dissolved by the turbulence grille because the turbulence bales also extend beyond the central plane of the housing and thus reach the region of the turbulence grille. The situation is further improved if further turbulence grids which are parallel and fixed to the housing are arranged on both sides of the central plane of the housing. The length of the turbulence grids in the direction of flow depends on the respective flow rate. It should be so large that all turbulence bales entrained by the air flow are caught by the turbulence grids.

Bei praktischen Ausführungen können die Turbulenzgitter aus Lochblechen bestehen. Als besonders günstig haben sich Turbulenzgitter erwiesen, die einen freien Querschnitt zwischen 30 % und 70 % ihrer Fläche aufweisen.In practical versions, the turbulence grids can consist of perforated plates. Turbulence grids which have a free cross section between 30% and 70% of their area have proven to be particularly favorable.

Die beschriebenen Turbulenzgitter sind besonders wirkungsvoll bei einer Drosselklappe, deren Klappe in Schließrichtung unter einem Winkel von 60° zur Mittelebene des Gehäuses angeordnet ist. Dabei kann auch im Gehäuse ein Zuluftkanal und ein daran anschliessender Abluftkanal mit größerem Querschnitt ausgebildet sein, wobei die Klappe im Zuluftkanal und die Turbulenzgitter im Abluftkanal angeordnet sind. Die dabei entstehende plötzliche Querschnittserweiterung im Übergangsbereich zwischen Zuluftkanal und Abluftkanal ist unschädlich, weil auch die dort entstehenden Turbulenzballen von den Turbulenzgittern erfaßt werden. Günstig ist auf jeden Fall eine Anordnung, bei der der Übergang zwischen Zuluftkanal und Abluftkanal der Berührungslinie zwischen Zuluftkanal und geschlossener Klappe folgt.The turbulence grids described are particularly effective in the case of a throttle valve, the flap of which is arranged at an angle of 60 ° to the central plane of the housing in the closing direction. In this case, a supply air duct and an adjoining exhaust air duct with a larger cross section can also be formed in the housing, the flap being arranged in the supply air duct and the turbulence grille in the exhaust air duct. The resulting sudden cross-sectional expansion in the transition area between the supply air duct and the exhaust air duct is harmless because the turbulence bales which are created there are also captured by the turbulence grids. In any case, an arrangement is favorable in which the transition between the supply air duct and the exhaust air duct follows the line of contact between the supply air duct and the closed flap.

Im folgenden werden in der Zeichnung dargestellte Ausführungsbeispiele der Erfindung erläutert; es zeigen:

  • Fig. 1 in schematischer Darstellung einen Längsschnitt durch eine Drosselklappe,
  • Fig. 2 eine andere Ausführung des Gegenstandes nach Fig. 1.
Exemplary embodiments of the invention illustrated in the drawing are explained below; show it:
  • 1 is a schematic representation of a longitudinal section through a throttle valve,
  • 2 shows another embodiment of the object according to FIG. 1.

Zu der dargestellten Drosselklappe gehört ein Gehäuse 1 mit einem Zuluftanschluß 2, von dem ein Zuluftkanal 3 ausgeht. An den Zuluftkanal 3 schließt sich ein Abluftkanal 4 an, der an einem Abluftanschluß 5 endet. In der Nähe des Endes des Zuluftkanals 3, jedoch im Zuluftkanal 3 befindet sich in halber Höhe des Zuluftkanals 3 eine Drehachse 6, die eine Klappe 7 trägt. Beidseits der Drehachse 6 erstrecken sich gleich große Abschnitte der Klappe 7. Die Klappe 7 kann als Stellglied einer nicht dargestellten Regelung ausgebildet sein. Dementsprechend kann ein nicht dargestellter Stellantrieb an der Drehachse 6 angreifen. Die Klappe 7 ist zwischen einer Offenstellung, die mit ausgezogenen Linien dargestellt ist, und einer Schließstellung, die mit strichpunktierten Linien dargestellt ist, in Richtung der Pfeile 8 verschwenkbar. Ein Pfeil 9 deutet die Strömungsrichtung der Luft durch das Gehäuse 1 an.The throttle valve shown includes a housing 1 with a supply air connection 2, from which a supply air duct 3 extends. An exhaust air duct 4 adjoins the supply air duct 3 and ends at an exhaust air connection 5. Near the end of the supply air duct 3, but in the supply air duct 3, there is an axis of rotation 6, which carries a flap 7, halfway up the supply air duct 3. Sections of the flap 7 of equal size extend on both sides of the axis of rotation 6. The flap 7 can be designed as an actuator of a control system, not shown. Accordingly, an actuator (not shown) can act on the axis of rotation 6. The flap 7 can be pivoted in the direction of the arrows 8 between an open position, which is shown with solid lines, and a closed position, which is shown with dash-dotted lines. An arrow 9 indicates the direction of flow of air through the housing 1.

Bei der in Fig. 1 dargestellten Ausführung besitzt der Abluftkanal 4 einen größeren Querschnitt als der Zuluftkanal 3. Die Klappe 7 hat eine solche Grundfläche, daß sie in Schließstellung einen Winkel von ca. 60° zur Mittelebene 10 des Gehäuses 1 einnimmt. Die sich dann ergebende Berührungslinie 11 zwischen geschlossener Klappe 7 und Zuluftkanal 3 bildet praktisch auch das Ende des Zuluftkanals 3 bzw. den Übergang zwischen Zuluftkanal 3 und Abluftkanal 4.In the embodiment shown in FIG. 1, the exhaust air duct 4 has a larger cross section than the supply air duct 3. The flap 7 has a base area such that, in the closed position, it makes an angle of approximately 60 ° to the central plane 10 of the housing 1. The resulting line of contact 11 between closed flap 7 and supply air duct 3 practically also forms the end of supply air duct 3 or the transition between supply air duct 3 and exhaust air duct 4.

In Strömungsrichtung hinter der Klappe 7 und außerhalb des Schwenkbereichs der Klappe 7 ist unterhalb der Mittelebene 10 an der Innenseite des Abluftkanals 4 ein Turbulenzgitter 12 befestigt, das sich unter einem Winkel von ca. 75° zur Strömungsrichtung bis kurz unter die Mittelebene 10 erstreckt. Ein weiteres Turbulenzgitter 13 ist oberhalb der Mittelebene 10 sowie kurz unterhalb der Innenseite des Abluftkanals 4 mit einer Achse 14 angelenkt, die sich parallel zur Drehachse 6 der Klappe 7 erstreckt. Das um die Achse 14 verschwenkbare Turbulenzgitter 13 ist im Bereich seines freien Randes 15 an einen Lenker 16 angeschlossen, der seinerseits im Bereich der stromabwärts liegenden Kante 17 der Klappe 7 an diese angelenkt ist.In the flow direction behind the flap 7 and outside Half of the swivel range of the flap 7, a turbulence grille 12 is attached below the central plane 10 on the inside of the exhaust air duct 4 and extends at an angle of approximately 75 ° to the flow direction to just below the central plane 10. Another turbulence grille 13 is articulated above the central plane 10 and just below the inside of the exhaust air duct 4 with an axis 14 which extends parallel to the axis of rotation 6 of the flap 7. The turbulence grille 13, which can be pivoted about the axis 14, is connected in the region of its free edge 15 to a link 16 which in turn is articulated to the flap 7 in the region of the downstream edge 17 thereof.

Mit zunehmender Auslenkung der Klappe 7 aus der Offenstellung wird auch das Turbulenzgitter 13 um seine Achse 14 verschwenkt, bis es bei Schließstellung der Klappe 7 die mit strichpunktierten Linien angedeutete Stellung einnimmt, bei der der freie Rand 15 der Klappe 7 etwas oberhalb der Mittelebene 10 steht.With increasing deflection of the flap 7 from the open position, the turbulence grille 13 is also pivoted about its axis 14 until, when the flap 7 is in the closed position, it assumes the position indicated by dash-dotted lines, in which the free edge 15 of the flap 7 is slightly above the central plane 10 .

Die Turbulenzgitter 12,13 erfassen großvolumige Turbulenzballen, die von der gegen die Strömungsrichtung angestellten Klappe 7 abgehen und lösen diese in eine Vielzahl kleinerer Turbulenzballen auf. Dadurch wird die Entstehung niederfrequenter Geräusche wirksam unterbunden.The turbulence grids 12, 13 capture large-volume turbulence bales that come from the flap 7 set against the direction of flow and dissolve them into a large number of smaller turbulence bales. This effectively prevents the generation of low-frequency noise.

Bei der in Fig. 2 dargestellten Ausführung bezeichnen gleiche Bezugszeichen gleiche Teile. Der Zuluftkanal 3 und der Abluftkanal 4 bilden gleiche Querschnitte. Etwas oberhalb der Mittelebene 10 des Gehäuses 1 ist ein Turbulenzgitter 18 angeordnet, das sich, ausgehend etwa von der Drehachse 6 stromabwärts und parallel zur Mittelebene 10 erstreckt. Beidseits der Mittelebene 10 sind weitere dazu parallele Turbulenzgitter 19,20 etwa auf halber Strecke zwischen Mittelebene 10 und oberer bzw. unterer Gehäusewandung angeordnet, deren Anfang jeweils außerhalb des Schwenkbereichs der Klappe 7 liegt und die sich parallel zum Turbulenzgitter 18 bzw. zur Mittelebene 10 erstrecken. Auch mit diesen Turbulenzgittern werden die von der Klappe 7 ausgehenden großvolumigen Turbulenzballen erfaßt und in eine Vielzahl kleiner Turbulenzballen aufgelöst.In the embodiment shown in FIG. 2, the same reference numerals designate the same parts. The supply air duct 3 and the exhaust air duct 4 form the same cross sections. Slightly above the central plane 10 of the housing 1 A turbulence grating 18 is arranged, which extends approximately downstream from the axis of rotation 6 and parallel to the central plane 10. On both sides of the central plane 10, further turbulence grids 19, 20 parallel thereto are arranged approximately halfway between the central plane 10 and the upper or lower housing wall, the beginning of which lies outside the pivoting range of the flap 7 and which extend parallel to the turbulence grille 18 or the central plane 10 . The large-volume turbulence bales emanating from the flap 7 are also detected with these turbulence grids and broken down into a large number of small turbulence bales.

Alle dargestellten Turbulenzgitter bestehen aus Lochblechen, deren feier Querschnitt etwa 30 bis 70 % ihrer Fläche entspricht.All of the turbulence grids shown consist of perforated sheets, the cross-section of which corresponds to approximately 30 to 70% of their area.

Claims (12)

1. Drosselklappe für klimatechnische Anlagen mit einem Gehäuse, welches einen Zuluftanschluß und einen Abluftanschluß sowie eine mittige Drehachse für eine Klappe aufweist, die zwischen einer Offenstellung und einer Schließstellung verschwenkbar ist, dadurch gekennzeichnet, daß in Strömungsrichtung (9) hinter der Klappe (7) und außerhalb des Schwenkbereichs (8) der Klappe (7) wenigstens ein Turbulenzgitter (12,13; 18,19,20) zum Unterdrücken großvolumiger Turbulenzballen angeordnet ist.1. Throttle valve for air conditioning systems with a housing which has a supply air connection and an exhaust air connection and a central axis of rotation for a flap which can be pivoted between an open position and a closed position, characterized in that in the flow direction (9) behind the flap (7) and at least one turbulence grille (12, 13; 18, 19, 20) for suppressing large-volume turbulence bales is arranged outside the swivel range (8) of the flap (7). 2. Drosselklappe nach Anspruch 1, dadurch gekennzeichnet, daß ein gehäusefestes Turbulenzgitter (12) angeordnet ist, das sich unter einem Winkel zur Strömungsrichtung (9) erstreckt und vor der durch die Drehachse (6) definierten Mittelebene (10) des Gehäuses (1) endet, und daß im Bereich der gegenüberliegenden Gehäuseseite ein weiteres Turbulenzgitter (13) angeordnet ist, das um eine zur Drehachse (6) parallele Achse (14) schwenkbar sowie mit seiner freien Kante (15) über einen Lenker (16) an den stromabwärts liegenden Abschnitt der Klappe (6) angeschlossen ist.2. Throttle valve according to claim 1, characterized in that a housing-fixed turbulence grille (12) is arranged which extends at an angle to the flow direction (9) and in front of the central plane (10) of the housing (1) defined by the axis of rotation (6). ends, and that in the area of the opposite side of the housing a further turbulence grille (13) is arranged, which can be pivoted about an axis (14) parallel to the axis of rotation (6) and with its free edge (15) via a link (16) to the downstream Section of the flap (6) is connected. 3. Drosselklappe nach Anspruch 1 oder 2, dadurch gekennzeichnet, daß das gehäusefeste Turbulenzgitter (12) unter einem Winkel von ca. 75° zur Strömungsrichtung (10) angeordnet ist.3. Throttle valve according to claim 1 or 2, characterized characterized in that the housing-fixed turbulence grille (12) is arranged at an angle of approximately 75 ° to the flow direction (10). 4. Drosselklappe nach einem der Ansprüche 1 bis 3, dadurch gekennzeichnet, daß das schwenkbare Turbulenzgitter (13) um eine Achse (14) schwenkbar ist, die dicht unterhalb der Gehäusewandung angeordnet ist.4. Throttle valve according to one of claims 1 to 3, characterized in that the pivotable turbulence grille (13) is pivotable about an axis (14) which is arranged just below the housing wall. 5. Drosselklappe nach einem der Ansprüche 1 bis 4, dadurch gekennzeichnet, daß der Lenker (16) im Bereich der stromabwärts liegenden Kante (17) der Klappe (7) an diese angeschlossen ist.5. Throttle valve according to one of claims 1 to 4, characterized in that the link (16) in the region of the downstream edge (17) of the flap (7) is connected to this. 6. Drosselklappe nach Anspruch 1, dadurch gekennzeichnet, daß das Turbulenzgitter (18) sich in Strömungsrichtung (9) im Bereich der Mittelebene (10) des Gehäuses (1) erstreckt und gehäusefest angeordnet ist.6. Throttle valve according to claim 1, characterized in that the turbulence grille (18) extends in the direction of flow (9) in the region of the central plane (10) of the housing (1) and is arranged fixed to the housing. 7. Drosselklappe nach Anspruch 6, dadurch gekennzeichnet, daß beidseits der Mittelebene (10) des Gehäuses (1) weitere dazu parallele und gehäusefeste Turbulenzgitter (19,20) angeordnet sind.7. Throttle valve according to claim 6, characterized in that on both sides of the central plane (10) of the housing (1) further parallel and fixed turbulence grille (19, 20) are arranged. 8. Drosselklappe nach einem der Ansprüche 1 bis 7, dadurch gekennzeichnet, daß die Turbulenzgitter (12,13; 18,19,20) aus Lochblechen bestehen.8. Throttle valve according to one of claims 1 to 7, characterized in that the turbulence grille (12,13; 18,19,20) consist of perforated plates. 9. Drosselklappe nach einem der Ansprüche 1 bis 8, dadurch gekennzeichnet, daß die Turbulenzgitter (12,13; 18,19,20) einen freien Querschnitt zwischen 30 % und 70 % ihrer Fläche aufweisen.9. Throttle valve according to one of claims 1 to 8, characterized in that the turbulence grille (12,13; 18,19,20) has a free cross section between 30% and 70% of their area. 10. Drosselklappe nach einem der Ansprüche 1 bis 9, dadurch gekennzeichnet, daß die Klappe (7) in Schließrichtung unter einem Winkel von ca. 60° zur Mittelebene (10) des Gehäuses (1) angeordnet ist.10. Throttle valve according to one of claims 1 to 9, characterized in that the flap (7) is arranged in the closing direction at an angle of approximately 60 ° to the central plane (10) of the housing (1). 11. Drosselklappe nach einem der Ansprüche 1 bis 10, dadurch gekennzeichnet, daß im Gehäuse (1) ein Zuluftkanal (3) und ein daran anschließender Abluftkanal (4) mit größerem Querschnitt ausgebildet ist, wobei die Klappe (7) im Zuluftkanal (3) und die Turbulenzgitter (12,13; 18,19,20) im Abluftkanal (4) angeordnet sind.11. Throttle valve according to one of claims 1 to 10, characterized in that in the housing (1) an air supply duct (3) and an adjoining exhaust air duct (4) is formed with a larger cross section, the flap (7) in the supply air duct (3) and the turbulence grids (12, 13; 18, 19, 20) are arranged in the exhaust air duct (4). 12. Drosselklappe nach Anspruch 11, dadurch gekennzeichnet, daß der Übergang zwischen Zuluftkanal (3) und Abluftkanal (4) der Berührungslinie (11) zwischen Zuluftkanal (3) und geschlossener Klappe (7) folgt.12. Throttle valve according to claim 11, characterized in that the transition between the supply air duct (3) and the exhaust air duct (4) follows the line of contact (11) between the supply air duct (3) and the closed flap (7).
EP85113816A 1984-11-05 1985-10-30 Throttle valve for air conditioning systems Expired EP0180914B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19848432305U DE8432305U1 (en) 1984-11-05 1984-11-05 THROTTLE VALVE FOR AIR CONDITIONING SYSTEMS
DE8432305U 1984-11-05

Publications (3)

Publication Number Publication Date
EP0180914A2 true EP0180914A2 (en) 1986-05-14
EP0180914A3 EP0180914A3 (en) 1987-01-14
EP0180914B1 EP0180914B1 (en) 1989-05-31

Family

ID=6772351

Family Applications (1)

Application Number Title Priority Date Filing Date
EP85113816A Expired EP0180914B1 (en) 1984-11-05 1985-10-30 Throttle valve for air conditioning systems

Country Status (3)

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EP (1) EP0180914B1 (en)
DE (2) DE8432305U1 (en)
NO (1) NO160470C (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0863303A2 (en) * 1997-03-04 1998-09-09 Nippon Soken, Inc. Apparatus for preventing flow noise in throttle valve

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE9217702U1 (en) * 1992-12-24 1993-04-22 "Schako" Metallwarenfabrik Ferdinand Schad KG Zweigniederlassung Kolbingen, 7201 Kolbingen Distribution box for supply and/or exhaust air
FR2729461B1 (en) * 1995-01-17 1997-04-18 Cerga DEVICE FOR ADJUSTING THE PASSAGE SECTION OF A VENTILATION AIR VENT OF A PREMISES
DE102004046210B4 (en) * 2003-09-26 2011-06-01 Ernst Hagmann Ventilation device and building with a ventilation device

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3147768A (en) * 1961-11-15 1964-09-08 Barber Colman Co Air flow control damper
FR1571774A (en) * 1967-06-29 1969-06-20
FR2158408A1 (en) * 1971-11-01 1973-06-15 Trane Co
DE2653161A1 (en) * 1976-11-23 1978-05-24 Schako Metallwarenfabrik AIR DISTRIBUTION BOX FOR VENTILATION AND AIR CONDITIONING

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3147768A (en) * 1961-11-15 1964-09-08 Barber Colman Co Air flow control damper
FR1571774A (en) * 1967-06-29 1969-06-20
FR2158408A1 (en) * 1971-11-01 1973-06-15 Trane Co
DE2653161A1 (en) * 1976-11-23 1978-05-24 Schako Metallwarenfabrik AIR DISTRIBUTION BOX FOR VENTILATION AND AIR CONDITIONING

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0863303A2 (en) * 1997-03-04 1998-09-09 Nippon Soken, Inc. Apparatus for preventing flow noise in throttle valve
EP0863303A3 (en) * 1997-03-04 1999-03-31 Nippon Soken, Inc. Apparatus for preventing flow noise in throttle valve
US5970963A (en) * 1997-03-04 1999-10-26 Nippon Soken, Inc. Apparatus for preventing flow noise in throttle valve

Also Published As

Publication number Publication date
DE8432305U1 (en) 1985-02-07
EP0180914B1 (en) 1989-05-31
NO854324L (en) 1986-05-06
EP0180914A3 (en) 1987-01-14
NO160470C (en) 1989-04-19
NO160470B (en) 1989-01-09
DE3570741D1 (en) 1989-07-06

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