EP0141944B1 - Regulating device for chimney draught - Google Patents

Regulating device for chimney draught Download PDF

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Publication number
EP0141944B1
EP0141944B1 EP84110333A EP84110333A EP0141944B1 EP 0141944 B1 EP0141944 B1 EP 0141944B1 EP 84110333 A EP84110333 A EP 84110333A EP 84110333 A EP84110333 A EP 84110333A EP 0141944 B1 EP0141944 B1 EP 0141944B1
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EP
European Patent Office
Prior art keywords
secondary air
flap
regulating flap
housing
arm
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
EP84110333A
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German (de)
French (fr)
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EP0141944A1 (en
Inventor
Hubert Nübel
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.)
Viessmann Werke GmbH and Co KG
Original Assignee
Viessmann Werke GmbH and Co KG
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
Priority claimed from DE19838324933 external-priority patent/DE8324933U1/en
Priority claimed from DE19848420197 external-priority patent/DE8420197U1/en
Application filed by Viessmann Werke GmbH and Co KG filed Critical Viessmann Werke GmbH and Co KG
Priority to AT84110333T priority Critical patent/ATE38714T1/en
Publication of EP0141944A1 publication Critical patent/EP0141944A1/en
Application granted granted Critical
Publication of EP0141944B1 publication Critical patent/EP0141944B1/en
Expired legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23L—SUPPLYING AIR OR NON-COMBUSTIBLE LIQUIDS OR GASES TO COMBUSTION APPARATUS IN GENERAL ; VALVES OR DAMPERS SPECIALLY ADAPTED FOR CONTROLLING AIR SUPPLY OR DRAUGHT IN COMBUSTION APPARATUS; INDUCING DRAUGHT IN COMBUSTION APPARATUS; TOPS FOR CHIMNEYS OR VENTILATING SHAFTS; TERMINALS FOR FLUES
    • F23L11/00—Arrangements of valves or dampers after the fire
    • F23L11/02—Arrangements of valves or dampers after the fire for reducing draught by admission of air to flues
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23L—SUPPLYING AIR OR NON-COMBUSTIBLE LIQUIDS OR GASES TO COMBUSTION APPARATUS IN GENERAL ; VALVES OR DAMPERS SPECIALLY ADAPTED FOR CONTROLLING AIR SUPPLY OR DRAUGHT IN COMBUSTION APPARATUS; INDUCING DRAUGHT IN COMBUSTION APPARATUS; TOPS FOR CHIMNEYS OR VENTILATING SHAFTS; TERMINALS FOR FLUES
    • F23L13/00—Construction of valves or dampers for controlling air supply or draught
    • F23L13/02—Construction of valves or dampers for controlling air supply or draught pivoted about a single axis but having not other movement

Definitions

  • the invention relates to a secondary air draft regulator according to the preamble of the main claim.
  • Such a tension regulator is known from US-A-3 087 677, the housing of which is T-shaped. This housing is placed horizontally on the flue pipe of the boiler, and the flue pipe of the controller housing goes up. Compared to the connection to the flue gas outlet of the boiler, a secondary air control flap is suspended in the opening of the controller housing, which is held in the closed position by an appropriately arranged counterweight. If the pressure difference is large enough, the regulator flap opens and allows secondary air to flow in. It is not possible to keep the control flap open in order to ventilate the chimney when the boiler or burner is not in operation, but also to close off the interior of the boiler as far as possible with this previously known secondary air draft controller. Such ventilation of the chimney is particularly desirable with regard to the operation of modern heating boilers, since these are usually operated as so-called low or low-temperature boilers, in which, if controlled accordingly, the burner remains switched off for more or less long periods .
  • the invention is accordingly based on the object of improving a secondary air regulator of the type mentioned in such a way that this or this control flap should be able to take on three functions in practice, namely as an exhaust flap, draft limiter flap and ventilation flap.
  • Actuators for actuating flaps are known according to US-A-4185 770, but this is not a secondary air regulator, but a simple draft regulator in which a flap arranged in the flue gas pipe is pivoted accordingly with the motor and thus influences the Size of the available free flow cross section can be obtained. Due to the inventive design and arrangement of the secondary air draft regulator or the regulator flap, which extends in the closed position parallel to the flow direction and swivels into the flow path when opened, but still points in the outflow direction, it is advantageously ensured in combination with the servomotor that On the one hand, the regulator flap functions independently of the servomotor as a secondary air regulator flap, i.e. it can swing freely, and on the other hand, the regulator flap can be moved to the full open position by the servomotor when the boiler or burner is switched off, in order to ensure intensive ventilation of the chimney during this phase.
  • Fig. 1 shows an example of the arrangement of the secondary air draft regulator 15 between a boiler 27 with burner 30 and exhaust pipe 29 and an exhaust pipe 28 leading to the chimney.
  • This secondary air draft regulator 15 consists of a housing 1 with inflow and outflow connecting pieces 2, 3 on which a side air inlet opening 4 is arranged on the side and this is closed by a control flap 5 which can be pivoted about a horizontal axis 8 in the rest position.
  • the dimensions of the control flap 5 arranged in the housing 1 are slightly larger than the dimensions of the secondary air inflow opening 4.
  • the control flap 5 has an extension arm 6 with an adjustable counterweight 7.
  • the inflow and outflow connections 2, 3 are arranged on the housing 1 in the axial flow direction and the axis 8 of the flap, which acts as an exhaust gas, draft limiter and ventilation flap and extends parallel to the flow direction in the closed position
  • Control flap 5 is arranged on the inflow neck side at the relevant edge of the secondary air inflow opening 4.
  • the flap servomotor 9 is arranged on the housing 1 by means of a suitable holder 9 ', which fully opens the control flap 5 for ventilation via a driver acting on the control flap 5 or the extension arm 6 and frees the control flap 5 for free oscillating movement when it is reset (Fig. 2, 3).
  • FIG. 2, 3 As can be seen from FIG.
  • the control flap 5 is provided with a sleeve 10 and corresponding sleeves 10 'are provided on the end of the secondary air inflow opening 4 facing the inflow pipe 2.
  • the control flap 5 is pivotally connected to the housing 1 with the axis 8 guided through the sleeves 10, 10 'in the manner of a hinge. 4, 5, the control flap 5 can also be mounted in a different way, namely in such a way that the control flap 5 is provided with an offset 11 and the end of the secondary air inflow opening 4 facing the inflow nozzle 2 is provided with a contact edge 12 the elbow 11 is mounted.
  • at least one tongue 13 is expediently and advantageously provided on the support edge 12 and a number of openings 14 corresponding to the number of tongues 13, in which the tongues 13 engage, is provided on the offset 11.
  • the servomotor 9 is not shown, although in principle this also belongs to these embodiments.
  • the control flap 5 pivots accordingly, largely closes the flow path between the exhaust pipe 29 and the exhaust pipe 28 and opens the secondary air inflow opening 4, so that cooling air flows in through it and through the pipe 28 can get into the chimney.
  • control flap 5 has a flanged edge 20 pointing towards the side air inflow opening 4 and the side air inflow opening 4 correspondingly has an opposite directed flanged edge 21 into which the edge 20 engages in the closed position.
  • control flap 5 with the arm 6 is advantageously made in one piece and the arm 6 is designed as a flag-shaped extension 6 ', which has a channel embossing 22 at its free end, which is provided with an elongated hole 23 oriented in the direction of the arm 6 is.
  • a bolt 24 connecting the counterweight 7 to the extension arm 6 has a foot 25 adapted to the shape of the channel and can be fixed in the desired angular position with a locking nut 26.

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Chimneys And Flues (AREA)
  • Air Supply (AREA)
  • Regulation And Control Of Combustion (AREA)
  • Air-Flow Control Members (AREA)

Description

Die Erfindung betrifft einen Nebenluft-Zugregler gemäss Oberbegriff des Hauptanspruches.The invention relates to a secondary air draft regulator according to the preamble of the main claim.

Ein derartiger Zugregler ist nach der US-A-3 087 677 bekannt, dessen Gehäuse T-förmig ausgebildet ist. Dieses Gehäuse ist horizontal auf den Abgasstutzen des Heizkessels aufgesetzt, und der Abgasstutzen des Reglergehäuses geht nach oben ab. Gegenüber dem Anschluss zum Abgasstutzen des Heizkessels ist in der Öffnung des Reglergehäuses eine Nebenluftreglerklappe frei pendelnd aufgehängt, die durch ein entsprechend angeordnetes Gegengewicht in Schliessstellung gehalten wird. Bei ausreichend grosser Druckdifferenz öffnet sich die Reglerklappe und lässt Nebenluft einströmen. Ein gezieltes Offenhalten der Reglerklappe, um den Schornstein bei Nichtbetrieb des Kessels bzw. des Brenners zwecks Trokkenhaltung zu belüften, dabei aber auch gleichzeitig den Kesselinnenraum weitestgehend abzuschliessen, ist mit diesem vorbekannten Nebenluft-zugregler nicht möglich. Eine solche Belüftung des Schornsteins ist aber insbesondere in Rücksicht auf den Betrieb moderner Heizungskessel anzustreben, da diese in der Regel als sog. Tief- bzw. Niedertemperaturheizkessel betrieben werden, bei denen also, entsprechend gesteuert, der Brenner über mehr oder weniger lange Perioden ausgeschaltet bleibt.Such a tension regulator is known from US-A-3 087 677, the housing of which is T-shaped. This housing is placed horizontally on the flue pipe of the boiler, and the flue pipe of the controller housing goes up. Compared to the connection to the flue gas outlet of the boiler, a secondary air control flap is suspended in the opening of the controller housing, which is held in the closed position by an appropriately arranged counterweight. If the pressure difference is large enough, the regulator flap opens and allows secondary air to flow in. It is not possible to keep the control flap open in order to ventilate the chimney when the boiler or burner is not in operation, but also to close off the interior of the boiler as far as possible with this previously known secondary air draft controller. Such ventilation of the chimney is particularly desirable with regard to the operation of modern heating boilers, since these are usually operated as so-called low or low-temperature boilers, in which, if controlled accordingly, the burner remains switched off for more or less long periods .

Der Erfindung liegt demgemäss die Aufgabe zugrunde, einen Nebenluftregler der eingangs genannten Art dahingehend zu verbessern, dass dieser bzw. diese Regelklappe praktisch drei Funktionen zu übernehmen in der Lage sein soll, nämlich als Abgasklappe, Zugbegrenzerklappe und Belüftungsklappe.The invention is accordingly based on the object of improving a secondary air regulator of the type mentioned in such a way that this or this control flap should be able to take on three functions in practice, namely as an exhaust flap, draft limiter flap and ventilation flap.

Diese Aufgabe ist mit einem Nebenluftregler der eingangs genannten-Art nach der Erfindung durch die im Kennzeichen des Hauptanspruches angeführten Merkmale gelöst. Vorteilhafte Weiterbildungen ergeben sich nach den Unteransprüchen.This object is achieved with a secondary air regulator of the type mentioned according to the invention by the features stated in the characterizing part of the main claim. Advantageous further developments result from the subclaims.

Stellmotoren zur Betätigung von Klappen sind zwar nach der US-A-4185 770 bekannt, hierbei handelt es sich aber nicht um einen Nebenluftregler, sondern um einen einfachen Zugregler, bei dem mit dem Motor eine im Rauchgasrohr angeordnete Klappe entsprechend verschwenkt und damit Einfluss auf die Grösse des verfügbaren freien Durchströmquerschnitts gewonnen werden kann. Durch die erfindungsgemässe Ausbildung und Anordnung des Nebenluft-Zugreglers bzw. der Reglerklappe, die sich in Schliessstellung parallel zur Durchströmrichtung erstreckt und bei Öffnung in den Strömungsweg einschwenkt, dabei aber dennoch in Abströmrichtung weist, ist vorteilhaft in der Kombination mit dem Stellmotor dafür gesorgt, dass einerseits die Reglerklappe unabhängig vom Stellmotor ihre Funktion als Nebenluftreglerklappe erfüllen, also frei pendeln kann und dass andererseits die Reglerklappe durch den Stellmotor bei ausgeschaltetem Heizkessel bzw. Brenner in volle Öffnungsstellung gebrachtwerden kann, um während dieser Phase für eine intensive Belüftung des Schornsteins zu sorgen.Actuators for actuating flaps are known according to US-A-4185 770, but this is not a secondary air regulator, but a simple draft regulator in which a flap arranged in the flue gas pipe is pivoted accordingly with the motor and thus influences the Size of the available free flow cross section can be obtained. Due to the inventive design and arrangement of the secondary air draft regulator or the regulator flap, which extends in the closed position parallel to the flow direction and swivels into the flow path when opened, but still points in the outflow direction, it is advantageously ensured in combination with the servomotor that On the one hand, the regulator flap functions independently of the servomotor as a secondary air regulator flap, i.e. it can swing freely, and on the other hand, the regulator flap can be moved to the full open position by the servomotor when the boiler or burner is switched off, in order to ensure intensive ventilation of the chimney during this phase.

Der erfindungsgemässe Nebenluftregler wird nachfolgend anhand der zeichnerischen Darstellung von Ausführungsbeispielen näher erläutert.The secondary air regulator according to the invention is explained in more detail below with reference to the drawing of exemplary embodiments.

Es zeigt schematisch

  • Fig. 1 im Schnitt den Nebenluftregler in Verbindung mit einem Heizungskessel und einer zu einem Schornstein führenden Rauchgasleitung;
  • Fig. 2 teilweise im Schnitt und Ansicht den Zugregler in Durchströmrichtung gesehen;
  • Fig. 3 den Zugregler im Längsschnitt;
  • Fig. 4 den Zugregler im Längsschnitt und besonderer Ausführungsform und
  • Fig. 5 im Schnitt eine besondere Ausführungseinzelheit.
It shows schematically
  • 1 shows the secondary air regulator in section in connection with a heating boiler and a flue gas pipe leading to a chimney;
  • Figure 2 seen partially in section and view of the draft regulator in the flow direction.
  • Figure 3 shows the tension controller in longitudinal section.
  • Fig. 4 the tension controller in longitudinal section and special embodiment and
  • Fig. 5 in section a special embodiment detail.

Fig. 1 zeigt ein Anordnungsbeispiel des Nebenluft-Zugreglers 15 zwischen einem Heizkessel 27 mit Brenner 30 und Abgasstutzen 29 und einer zum Schornstein führenden Abgasleitung 28. Dieser Nebenluft-Zugregler 15 besteht aus einem Gehäuse 1 mit Zu- und Abströmstutzen 2, 3, an dem seitlich eine Nebenluft-Einströmöffnung 4 angeordnet und diese mit einer um eine waagerechte Achse 8 schwenkbaren Regelklappe 5 in Ruhestellung verschlossen ist. Die Abmessungen der im Gehäuse 1 angeordneten Regelklappe 5 sind geringfügig grösser als die Abmessungen der Nebenluft-Einströmöffnung 4. Die Regelklappe 5 weist einen Ausleger 6 mit verstellbarem Gegengewicht 7 auf. Wesentlich an diesem Nebenluft-Zugregler 15 ist, dass am Gehäuse 1 die Zu- und Abströmstutzen 2, 3 in axialer Durchströmrichtung angeordnet sind und die Achse 8 der in einem als Abgas-, Zugbegrenzer- und Belüftungsklappe wirkenden, sich in Schliessstellung parallel zur Durchströmrichtung erstreckenden Regelklappe 5 zuströmstutzenseitig am betreffenden Rand der Nebenluft-Einströmöffnung 4 angeordnet ist. Am Gehäuse 1 ist mittels eines geeigneten Halters 9' der Klappenstellmotor 9 angeordnet, der über einen auf die Regelklappe 5 oder den Ausleger 6 wirkenden Mitnehmer die Regelklappe 5 für die Belüftung voll öffnet und bei Rückstellung die Regelklappe 5 zur frei pendelnden Bewegung freistellt (Fig. 2, 3). Wie aus Fig. 2 ersichtlich, ist die Regelklappe 5 mit einer Hülse 10 versehen und am Zuströmstutzen 2 zugewandten Ende der Nebenluft-Einströmöffnung 4 sind dazu korrespondierende Hülsen 10' vorgesehen. Damit ist die Regelklappe 5 mit der durch die Hülsen 10, 10' geführten Achse 8 nach Art eines Bandscharniers klappbar mit dem Gehäuse 1 verbunden. Die Lagerung der Regelklappe 5 kann aber auch gemäss Fig. 4, 5 in anderer Weise erfolgen, nämlich derart, dass die Regelklappe 5 mit einer Abkröpfung 11 und das dem Zuströmstutzen 2 zugewandte Ende der Nebenluft-Einströmöffnung 4 mit einer Auflagekante 12 versehen ist, auf der die Abkröpfung 11 gelagert ist. Zweckmässig und vorteilhaft ist dabei an der Auflagekante 12 mindestens eine Zunge 13 und an der Abkröpfung 11 eine der Anzahl der Zungen 13 entsprechende Anzahl von Durchbrüchen 14 vorgesehen, in die die Zungen 13 eingreifen.Fig. 1 shows an example of the arrangement of the secondary air draft regulator 15 between a boiler 27 with burner 30 and exhaust pipe 29 and an exhaust pipe 28 leading to the chimney. This secondary air draft regulator 15 consists of a housing 1 with inflow and outflow connecting pieces 2, 3 on which a side air inlet opening 4 is arranged on the side and this is closed by a control flap 5 which can be pivoted about a horizontal axis 8 in the rest position. The dimensions of the control flap 5 arranged in the housing 1 are slightly larger than the dimensions of the secondary air inflow opening 4. The control flap 5 has an extension arm 6 with an adjustable counterweight 7. It is essential to this secondary air draft regulator 15 that the inflow and outflow connections 2, 3 are arranged on the housing 1 in the axial flow direction and the axis 8 of the flap, which acts as an exhaust gas, draft limiter and ventilation flap and extends parallel to the flow direction in the closed position Control flap 5 is arranged on the inflow neck side at the relevant edge of the secondary air inflow opening 4. The flap servomotor 9 is arranged on the housing 1 by means of a suitable holder 9 ', which fully opens the control flap 5 for ventilation via a driver acting on the control flap 5 or the extension arm 6 and frees the control flap 5 for free oscillating movement when it is reset (Fig. 2, 3). As can be seen from FIG. 2, the control flap 5 is provided with a sleeve 10 and corresponding sleeves 10 'are provided on the end of the secondary air inflow opening 4 facing the inflow pipe 2. Thus, the control flap 5 is pivotally connected to the housing 1 with the axis 8 guided through the sleeves 10, 10 'in the manner of a hinge. 4, 5, the control flap 5 can also be mounted in a different way, namely in such a way that the control flap 5 is provided with an offset 11 and the end of the secondary air inflow opening 4 facing the inflow nozzle 2 is provided with a contact edge 12 the elbow 11 is mounted. In this case, at least one tongue 13 is expediently and advantageously provided on the support edge 12 and a number of openings 14 corresponding to the number of tongues 13, in which the tongues 13 engage, is provided on the offset 11.

In den Fig. 1, 4 und 5 ist der Stellmotor 9 nicht dargestellt, obgleich dieser grundsätzlich auch zu diesen Ausführungsformen gehört.1, 4 and 5, the servomotor 9 is not shown, although in principle this also belongs to these embodiments.

Um die Regelklappe 5 mittels des Stellmotors 9 bei abgeschaltetem Heizkessel 27 bzw. Brenner 30 zwecks Schornsteinbelüftung in Öffnungsstellung bringen zu können, bei der der Heizkessel 27 weitgehend zur Abgasleitung 28 bzw. zum nicht dargestellten Schornstein abgesperrt ist, ist der am Gehäuse 1 des Zugreglers 15 angeordneten Klappenstellmotor 9 mit zur Achse 8 koaxialen Antriebsachse 8' mit einer Nockenscheibe 16 versehen, die zwei um maximal 90° gegeneinander versetzte, den Mitnehmerhebel 17 eingabelnde Nocken 18, 19 aufweist, wobei der freie Winkel a zwischen den einander zugewandten Innenflanken der Nocken 18, 19 max. 80° beträgt. In der in Fig. 3 dargestellten Stellung kann dabei die Regelklappe 5 frei pendeln. Wird der Nocken 18 im Uhrzeigersinn vom Stellmotor 9 gedreht, verschwenkt sich die Regelklappe 5 entsprechend, schliesst dabei den Strömungsweg zwischen Abgasstutzen 29 und Abgasleitung 28 weitgehend ab und öffnet die Nebenluft-Einströmöffnung 4, so dass durch diese ungehindert Kühlluft einströmen und durch die Leitung 28 in den Schornstein gelangen kann.In order to be able to bring the control flap 5 into the open position by means of the servomotor 9 when the boiler 27 or burner 30 is switched off for the purpose of chimney ventilation, in which the boiler 27 is largely shut off to the exhaust pipe 28 or to the chimney (not shown), this is on the housing 1 of the draft controller 15 arranged flap servomotor 9 with the drive axis 8 'coaxial to the axis 8' with a cam disk 16 which has two cams 18, 19 which are offset from one another by a maximum of 90 ° and input the driving lever 17, the free angle a between the mutually facing inner flanks of the cams 18, 19 max. Is 80 °. In the position shown in Fig. 3, the control valve 5 can swing freely. If the cam 18 is rotated clockwise by the servo motor 9, the control flap 5 pivots accordingly, largely closes the flow path between the exhaust pipe 29 and the exhaust pipe 28 and opens the secondary air inflow opening 4, so that cooling air flows in through it and through the pipe 28 can get into the chimney.

Zwecks dichten Verschlusses der Nebenluft-Einströmöffnung 4 in Schliessstellung weist gemäss Fig. 4 die Regelklappe 5 einen gegen die Nebenluft-Einströmöffnung 4 weisenden aufgebördelten Rand 20 und die Nebenluft-Einströmöffnung 4 dazu korrespondierend einen entgegengesetzt gerichteten eingebördelten Rand 21 auf, in den der Rand 20 in Schliessstellung eingreift.4, the control flap 5 has a flanged edge 20 pointing towards the side air inflow opening 4 and the side air inflow opening 4 correspondingly has an opposite directed flanged edge 21 into which the edge 20 engages in the closed position.

Vorteilhaft ist beim Ganzen gemäss Fig. 4, 5 die Regelklappe 5 mit Ausleger 6 einstückig und der Ausleger 6 als fahnenförmiger Fortsatz 6' ausgebildet, der an seinem freien Ende eine Rinnenprägung 22 aufweist, die mit einem in Richtung des Auslegers 6 ausgerichteten Langloch 23 versehen ist. Ein das Gegengewicht 7 mit dem Ausleger 6 verbindender Bolzen 24 weist einen der Rinnenform angepassten Fuss 25 auf und ist mit einer Feststellmutter 26 in gewünschter Winkellage festsetzbar.4, 5, the control flap 5 with the arm 6 is advantageously made in one piece and the arm 6 is designed as a flag-shaped extension 6 ', which has a channel embossing 22 at its free end, which is provided with an elongated hole 23 oriented in the direction of the arm 6 is. A bolt 24 connecting the counterweight 7 to the extension arm 6 has a foot 25 adapted to the shape of the channel and can be fixed in the desired angular position with a locking nut 26.

Claims (7)

1. Secondary air draught regulator for installation in a flue gas duct, consisting of a housing (1) with inflow and outflow connectors (2, 3), on which a secondary air inflow opening (4) is disposed laterally, said opening (4) being closed by means of a regulating flap (5) in the resting position which can be swung about a horizontal spindle (8), the dimensions of the regulating flap (5) arranged in the housing (1) being slightly greater than the dimensions of the secondary air inflow opening (4) and the regulating flap (5) having a arm (6) with an adjustable counterweight (7), and the regulating flap (5) also pivoting into the housing (1) in opening, characterised in that the inflow and outflow connectors (2, 3) are arranged on the housing (1) in the direction of axial throughflow, and the spindle (8) of the regulating flap (5), which acts as an exhaust gas, draught limiting and ventilation flap and which extends parallel to the direction of throughflow in the closed position, is provided at the inflow side on the associated edge of the secondary air inflow opening (4) and a flap actuating motor (9) known per se, is provided on the housing 1, which fully opens the regulating flap (5), for ventilation by means of an engaging member acting on the regulating flap (5) or on the arm (6), and, when reset, releases the regulating flap (5) to move in freely swinging manner.
2. Secondary air draught regulator according to claim 1, characterised in that the regulating flap (5) is provided with a sleeve (10), and corresponding sleeves (10') are provided at the end of the secondary air inflow opening (4) nearest the inflow connector (2), and the regulating flap (5) is hinged- ly connected to the housing (1), by means of the spindle (8) passing through the sleeves (10,10'), in the manner of a strap hinge.
3. Secondary air draught regulator according to claim 1, characterised in that the regulating flap (5) is provided with a bent portion (11) and the end of the secondary air inflow opening (4) nearest the inflow connector (2) is provided with an abutment edge (12) on which the bent portion (11) is supported.
4. Secondary air draught regulator according to claim 3, characterised in that on the abutment edge (12) there is provided at least one tongue (13) and on the bent portion (11) there are a number of openings (11), corresponding to the number of tongues (13), in which the tongues (13) engage.
5. Secondary air draught regulator according to claims 1 to 3, characterised in that the flap actuating motor (9) mounted on the housing (1) of the draught regulator (15) and comprising a drive shaft coaxial with the spindle (8) is provided with a cam disc (16) and this disc (16) has two cams (18, 19) offset by not more than 90° relative to each other and bracketing the engaging lever (17), the free angle between the facing inner sides of the cams (18, 19) being not more than 80°.
6. Secondary air draught regulator according to one of claims 1 to 5, characterised in that the regulating flap (5) has a flanged edge (20) pointing towards the secondary air inflow opening (4) and the secondary air inflow opening (4) has a corresponding, oppositely directed rolled-in edge (21) in which the edge (20) engages in the closed position.
7. Secondary air draught regulator according to one of claims 1 to 6, characterised in that the regulating flap (5) and arm (6) are integrally formed and the arm (6) is constructed as a lug-shaped extension which has at its free end, a stamped channel (22) which is provided with a slotted hole (23) aligned with the arm (6), and the bolt (24) which joins the counterweight (7) to the arm (6) has a base (25) which fits the shape of the channel and the bolt (24) can be secured in the desired angular position by means of a lock-nut (26).
EP84110333A 1983-08-31 1984-08-30 Regulating device for chimney draught Expired EP0141944B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT84110333T ATE38714T1 (en) 1983-08-31 1984-08-30 DRAW REGULATOR FOR CHIMNEY DRAW.

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
DE19838324933 DE8324933U1 (en) 1983-08-31 1983-08-31 CHIMNEY DRAW CONTROL
DE8324933U 1983-08-31
DE19848420197 DE8420197U1 (en) 1984-07-06 1984-07-06 CONTROL VALVE FOR CONTROLLING THE TRAIN IN THE CHIMNEY
DE8420197U 1984-07-06

Publications (2)

Publication Number Publication Date
EP0141944A1 EP0141944A1 (en) 1985-05-22
EP0141944B1 true EP0141944B1 (en) 1988-11-17

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Family Applications (1)

Application Number Title Priority Date Filing Date
EP84110333A Expired EP0141944B1 (en) 1983-08-31 1984-08-30 Regulating device for chimney draught

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EP (1) EP0141944B1 (en)
DE (1) DE3475221D1 (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6508246B1 (en) * 2000-11-17 2003-01-21 Lon W. Fiedler Mechanical draft controller
FR3034843B1 (en) * 2015-04-09 2019-07-12 Philippe Daniel Mansais FAST DISASSEMBLY CHIMNEY TRAP
DE102019104018A1 (en) * 2019-02-18 2020-08-20 Friedrich Boysen Gmbh & Co. Kg FLAP DEVICE

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2539815A (en) * 1947-04-19 1951-01-30 Sears Roebuck & Co Barometric draft control
US2546219A (en) * 1951-03-27 Draft regulator
US4185770A (en) * 1978-04-27 1980-01-29 Westinghouse Electric Corp. Automatic flue damper control system
EP0027175A2 (en) * 1979-09-07 1981-04-22 Otto Eppinger Shut-off system for flue gas exhaust conduits or suction air conduits of oil and gas fireplaces

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US2186354A (en) * 1938-02-03 1940-01-09 Everett Rosenberg H Draft control means
US2652200A (en) * 1950-09-29 1953-09-15 Edward A Field Barometric draft regulator
US3087677A (en) * 1959-07-24 1963-04-30 Hupp Corp Draft regulators
GB998531A (en) * 1963-06-24 1965-07-14 Cawood Wharton & Company Ltd Mechanism for controlling the gas pressure in furnaces
US4136676A (en) * 1977-12-07 1979-01-30 Thermiser Manufacturing Corporation Flue box assembly

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US2546219A (en) * 1951-03-27 Draft regulator
US2539815A (en) * 1947-04-19 1951-01-30 Sears Roebuck & Co Barometric draft control
US4185770A (en) * 1978-04-27 1980-01-29 Westinghouse Electric Corp. Automatic flue damper control system
EP0027175A2 (en) * 1979-09-07 1981-04-22 Otto Eppinger Shut-off system for flue gas exhaust conduits or suction air conduits of oil and gas fireplaces

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EP0141944A1 (en) 1985-05-22
DE3475221D1 (en) 1988-12-22

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