EP0180914B1 - Throttle valve for air conditioning systems - Google Patents

Throttle valve for air conditioning systems Download PDF

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Publication number
EP0180914B1
EP0180914B1 EP85113816A EP85113816A EP0180914B1 EP 0180914 B1 EP0180914 B1 EP 0180914B1 EP 85113816 A EP85113816 A EP 85113816A EP 85113816 A EP85113816 A EP 85113816A EP 0180914 B1 EP0180914 B1 EP 0180914B1
Authority
EP
European Patent Office
Prior art keywords
housing
throttle valve
disposed
turbulence
grids
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.)
Expired
Application number
EP85113816A
Other languages
German (de)
French (fr)
Other versions
EP0180914A2 (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 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, with several in the flow direction behind the flap and outside the pivoting range of the flap Turbulence grids for suppressing large-volume turbulence bales are arranged, at least one of which extends in the direction of flow in the region of the central plane of the housing and is arranged fixed to the housing.
  • Throttle valves are known in various designs. They control the air flow to a room or the like. Therefore throttle valves are usually 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 shut off, flow conditions result in particular in the case of flap positions in the vicinity of the closed position, which favor the generation of low-frequency noise.
  • angular turbulence grids are arranged in the throttle valve of the type described at the beginning (FR-A-2 158 408) behind the valve and outside the pivoting range of the valve. This can also help prevent low-frequency noise.
  • FR-A-2 158 408 angular turbulence grids are arranged in the throttle valve of the type described at the beginning (FR-A-2 158 408) behind the valve and outside the pivoting range of the valve. This can also help prevent low-frequency noise.
  • the invention has for its object to improve a generic throttle valve so that the generation of low-frequency noise is avoided with the lowest possible pressure loss.
  • the turbulence grids extend in the direction of flow, turbulence bales are nevertheless detected and resolved, and thus the generation of low-frequency noises is prevented. Even if the turbulence bales do not hit the turbulence grids, but move past them, the turbulence bales are nevertheless influenced by the grille, because to destroy or reduce the size of the turbulence bales, it is sufficient if their outer regions are gripped by the turbulence grids extending in the flow direction. Since these turbulence grids, which extend in the flow direction, represent practically no resistance to the flow, the pressure loss is also low.
  • 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 in the supply air duct and the turbulence grilles being arranged 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 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.

Landscapes

  • 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)

Description

Die Erfindung betrifft eine 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, wobei in Strömungsrichtung hinter der Klappe und außerhalb des Schwenkbereichs der Klappe mehrere Turbulenzgitter zum Unterdrücken großvolumiger Turbulenzballen angeordnet sind, von denen wenigstens eines sich in Strömungsrichtung im Bereich der Mittelebene des Gehäuses erstreckt und gehäusefest angeordnet ist.The invention relates to a 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, with several in the flow direction behind the flap and outside the pivoting range of the flap Turbulence grids for suppressing large-volume turbulence bales are arranged, at least one of which extends in the direction of flow in the region of the central plane of the housing and is arranged fixed to the housing.

Drosselklappen sind in verschiedenen Ausführungen bekannt. Mit ihnen wird der Luftstrom zu einem Raum oder dergleichen geregelt. Deswegen sind Drosseklappen meistens als Stellglied einer entsprechenden Regelung ausgebildet. Weil mit einer Drosselklappe der Luftstrom über einen weiten Bereich bis zum völligen Abschluß gesteuert oder geregelt werden soll, ergeben sich insbesondere bei Klappenstellungen in der Nähe der Schließstellung Strömungszustände, die die Entstehung von niederfrequenten Geräuschen begünstigen.Throttle valves are known in various designs. They control the air flow to a room or the like. Therefore throttle valves are usually 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 shut off, flow conditions result in particular in the case of flap positions in the vicinity of the closed position, which favor the generation of low-frequency noise.

Zur Unterdrückung dieser Geräusche sind bei der Drosselklappe der eingangs beschriebenen Gattung (FR-A-2 158 408) hinter der Klappe und außerhalb des Schwenkbereichs der Klappe winkelförmige Turbulenzgitter angeordnet. Damit kann möglicherweise auch die Entstehung niederfrequenter Geräusche vermieden werden. Nachteilig ist aber, daß ein verhältnismäßig großer Druckverlust entsteht.In order to suppress these noises, angular turbulence grids are arranged in the throttle valve of the type described at the beginning (FR-A-2 158 408) behind the valve and outside the pivoting range of the valve. This can also help prevent low-frequency noise. However, it is disadvantageous that there is a relatively large pressure loss.

Der Erfindung liegt die Aufgabe zugrunde, eine gattungsgemäße Drosselklappe so zu verbessern, daß die Entstehung niederfrequenter Geräusche bei möglichst geringem Druckverlust vermieden wird.The invention has for its object to improve a generic throttle valve so that the generation of low-frequency noise is avoided with the lowest possible pressure loss.

Diese Aufgabe wird dadurch gelöst, daß die weiteren Turbulenzgitter beidseits der Mittelebene des Gehäuses dazu parallel und gehäusefest angeordnet sind.This object is achieved in that the further turbulence grids are arranged on both sides of the central plane of the housing in parallel and fixed to the housing.

Obgleich erfindungsgemäß die Turbulenzgitter sich in Strömungsrichtung erstrecken, werden dennoch Turbulenzballen erfaßt und aufgelöst sowie damit die Entstehung niederfrequenter Geräusche unterbunden. Auch wenn die Turbulenzballen nicht auf die Turbulenzgitter treffen, sondern daran vorbeiwandern, werden dennoch die Turbulenzballen durch das Gitter beeinflußt, denn zur Zerstörung oder Verkleinerung der Turbulenzballen genügt es, wenn diese mit ihren äußeren Bereichen von den sich in Strömungsrichtung erstreckenden Turbulenzgittern erfaßt werden. Da diese sich in Strömungsrichtung erstreckenden Turbulenzgitter praktisch keinen Widerstand für die Strömung darstellen, ist der Druckverlust auch gering.Although, according to the invention, the turbulence grids extend in the direction of flow, turbulence bales are nevertheless detected and resolved, and thus the generation of low-frequency noises is prevented. Even if the turbulence bales do not hit the turbulence grids, but move past them, the turbulence bales are nevertheless influenced by the grille, because to destroy or reduce the size of the turbulence bales, it is sufficient if their outer regions are gripped by the turbulence grids extending in the flow direction. Since these turbulence grids, which extend in the flow direction, represent practically no resistance to the flow, the pressure loss is also low.

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. A supply air duct and an adjoining exhaust air duct with a larger cross section can also be formed in the housing, the flap in the supply air duct and the turbulence grilles being arranged 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 wird ein in der Zeichnung dargestelltes Ausführungsbeispiel der Erfindung erläutert; die einzige Figur zeigt in schematischer Darstellung einen Längsschnitt durch eine Drosselklappe.In the following an embodiment of the invention shown in the drawing is explained; the single figure shows a schematic representation of a longitudinal section through a throttle valve.

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 ein 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.

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.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.

Claims (6)

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 position, 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.
2. Throttle valve according to claim 1, characterised in that the turbulence grids (12, 13; 18, 19, 20) are formed from perforated sheets.
3. Throttle valve according to one of claims 1 or 2, characterised in that the turbulence grids (12, 13; 18, 19, 20) have a free space sectional area over between 30 % and 70 % of their area
4. Throttle valve according to one of claims 1 to 3, characterised in that, in the direction of closure, the valve flap (7) is disposed at an angle of approx. 600 relative to the central plane (10) of the housing (1).
5. Throttle valve according to one of claims 1 to 4, characterised in that an air inlet duct (3) and an air outlet duct (4), which communicates therewith and has a larger cross-section, are provided in the housing (1), the valve flap (7) being disposed in the air inlet duct (3) and the turbulence grids (12, 13; 18, 19,20) being disposed in the air outlet duct (4).
6. Throttle valve according to claim 5, characterised in that the transition between air inlet duct (3) and air outlet duct (4) follows the line of contact (11) between the air inlet duct (3) and the closed valve 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 EP0180914A2 (en) 1986-05-14
EP0180914A3 EP0180914A3 (en) 1987-01-14
EP0180914B1 true 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)

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

Families Citing this family (4)

* 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
EP0863303B1 (en) * 1997-03-04 2002-06-12 Nippon Soken, Inc. Apparatus for preventing flow noise in throttle valve
DE102004046210B4 (en) * 2003-09-26 2011-06-01 Ernst Hagmann Ventilation device and building with a ventilation device

Family Cites Families (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
US3750839A (en) * 1971-11-01 1973-08-07 Trane Co Air distribution apparatus
DE2653161C2 (en) * 1976-11-23 1981-09-24 Schako Verwaltung Beck KG, 7790 Meßkirch Air distribution box for ventilation and air conditioning systems

Also Published As

Publication number Publication date
DE3570741D1 (en) 1989-07-06
NO854324L (en) 1986-05-06
NO160470B (en) 1989-01-09
DE8432305U1 (en) 1985-02-07
NO160470C (en) 1989-04-19
EP0180914A2 (en) 1986-05-14
EP0180914A3 (en) 1987-01-14

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