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EP0214087A1 - Chimney top for the draught control in a flue - Google Patents

Chimney top for the draught control in a flue Download PDF

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Publication number
EP0214087A1
EP0214087A1 EP86810122A EP86810122A EP0214087A1 EP 0214087 A1 EP0214087 A1 EP 0214087A1 EP 86810122 A EP86810122 A EP 86810122A EP 86810122 A EP86810122 A EP 86810122A EP 0214087 A1 EP0214087 A1 EP 0214087A1
Authority
EP
European Patent Office
Prior art keywords
deflector
chimney
hood according
chimney hood
deflectors
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
EP86810122A
Other languages
German (de)
French (fr)
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EP0214087B1 (en
EP0214087B2 (en
Inventor
Anthony Neefs
Hans Jörg Weidmann
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Roweco
Original Assignee
Roweco
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 BE0/215453A external-priority patent/BE903043A/en
Application filed by Roweco filed Critical Roweco
Priority to AT86810122T priority Critical patent/ATE39020T1/en
Publication of EP0214087A1 publication Critical patent/EP0214087A1/en
Publication of EP0214087B1 publication Critical patent/EP0214087B1/en
Application granted granted Critical
Publication of EP0214087B2 publication Critical patent/EP0214087B2/en
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • F23L17/00—Inducing draught; Tops for chimneys or ventilating shafts; Terminals for flues
    • F23L17/02—Tops for chimneys or ventilating shafts; Terminals for flues
    • F23L17/08—Tops for chimneys or ventilating shafts; Terminals for flues with coaxial cones or louvres
    • 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
    • F23L17/00—Inducing draught; Tops for chimneys or ventilating shafts; Terminals for flues
    • F23L17/02—Tops for chimneys or ventilating shafts; Terminals for flues
    • F23L17/12—Devices for fastening the top or terminal to chimney, shaft, or flue

Definitions

  • the present invention relates to a chimney hood for monitoring the draft in a chimney pipe, in particular a chimney, a deflector which has a central opening and then a downwardly inclined surface, and that a second, completely closed deflector is provided above the first-mentioned deflector which completely covers at least the central opening of the first deflector.
  • a chimney hood of the type mentioned initially shows, for example, CH-PS 638'288 (Mitchell).
  • This known solution shows between the first and second deflectors a plurality of lamellae which, like the two deflectors, each have a central opening are.
  • a circular deflector element is arranged, which consists of two conical sheets facing each other, which works according to the Venturi principle and accelerates the wind blowing through, which creates a vacuum in the chimney pipe, which increases the draft of the chimney pipe.
  • the chimney hood shown in the figure mainly comprises two deflectors 1 and 2 mounted one above the other at a certain distance, which are fastened to a chimney 4 by means of fastening and support members 3.30. Both deflectors have a circular outer edge 5, the deflector 1 below having a central, likewise circular opening 6. The diameter of this central opening 6 is preferably in the order of magnitude between 38 and 45% of the outer diameter of the deflector 1. The outer diameter is dimensioned such that it slightly projects beyond the outer parapet edge of the fireplace.
  • the deflector 2 which is mounted coaxially at a certain distance above the deflector 1, is completely closed, which means that it has no central opening. Otherwise, the surface shape 7 of both deflectors is approximately identical. More precisely, in this special embodiment the surface 7 of both deflectors 1 and 2 is concave in the area of its outer edge 5 and changes into a convex shape in the direction towards the center.
  • a constriction 8 is provided between the two deflectors 1 and 2, close enough above the central opening 6 of the deflector 1 below, so that the gases rising through the opening 6, as indicated by the arrow 9, accelerate when leaving the Experience opening.
  • this constriction 8 is determined by a guide plate 10 provided centrally under the second deflector 2 mentioned, which extends over the central opening 6 and has an approximately spherical side 11 directed towards the opening. Consequently, the baffle in cooperation with the surface 7 of the deflector 1 causes a venturi effect. That mounted on the underside of the second deflector 2 Baffle plate 10 forms a cavity 12 with it. The curved part of baffle plate 10 extends over the central opening 6 of the deflector 1 to its inner edge 13. This creates an annular, dome-like vault 14 under the second deflector 2.
  • the entire construction of the chimney hood is designed so that it can be fully assembled or disassembled with just a few screws without a weld.
  • the deflectors 1 and 2, as well as the guide plate 10, which have ring-shaped regions running in an approximately horizontal plane, are provided with corresponding through holes arranged one above the other.
  • plastic screws 15 which lead through the above-mentioned through holes, the two parts are firmly screwed together on plastic spacers 16, which are provided with corresponding threads.
  • the spacer bolts 16 stand near the inner edge 13 of the lower deflector 1 thereon and define the desired distance between the two deflectors 1 and 2.
  • support members 17 are arranged which run exactly under the spacer bolts 16.
  • the support members 17 are also provided with through holes that correspond to the through holes in the lower deflector 1 in the mounting position. Again with plastic screws 18, the support members 17 are screwed together with the deflector 1 to the spacer bolts 16.
  • the support members 3 are in the form of support brackets made from material cut into a shape that has a double bend in the edge region 5 of the lower deflector 1.
  • the support surface 19 of the support bracket 17 can be provided with a pre-pressed bow point so that the support distance between the edge of the chimney and the outer edge 5 of the lower deflector 1 can be adjusted in height.
  • the shaped as a support bracket 17 have an arm 20 which protrude from the inner edge 13 of the central opening of the first deflector 1 in the assembled state down into the chimney.
  • the lower ends of the arms 20, the support members 17 are interconnected by fastening members 30.
  • the fastening members 30 consist of a ring 31 and patinated screws 32 which pass through the ring 31 and one arm 20 of the support members 17.
  • the screws 32 are secured by means of screw sleeves 33 held in the arms 20.
  • the length of the spacer bolts define the distance between the upper and lower deflectors. Depending on the size of the chimney hood, the length of the spacer bolts 16 must be adjusted. If the distance between the deflectors is too large, the desired effect flattens out; if the distance between the deflectors 1 and 2 is too small, the backflow becomes too large.
  • the length of the spacer bolts 16 should be between 20 and 45% of the size of the diameter of the opening 6. Optimal values were achieved with a length of the spacer bolts of approximately 30% of the diameter of the opening 6.
  • the turbulence T thus prevents the entry of wind and thus stops the venturi effect. In this way, the escape of the heated gases from the chimney 4 is delayed and thus unnecessary heat loss is slowed down.
  • the existing thermals in the chimney mean that enough gases can still rise from the chimney. The stopped suction effect, however, reduces the fire in the furnace, which can save heating energy.

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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)
  • Control Of Steam Boilers And Waste-Gas Boilers (AREA)

Abstract

1. A chimney cowl used to control the draft in a chimney, in particular a brick chimney, having a first deflector which has a central opening the adjacent surfaces being inclined downwards and having a second, completely closed deflector (2) fixedly and concentrally arranged above said first deflector (1), characterised in that said completely closed second deflector (2) has a convex downwardly inclined form, carrying at its underside a dish shaped baffle (10) of a diameter smaller than said second deflector, so that the annular area (14) constituted by the outer area of said baffle and the outer area of said second deflector has a dome shaped cross section.

Description

Die vorliegende Erfindung betrifft eine Kaminhaube zur Ueberwachung des Zuges in einem Kaminrohr, insbesondere einem Schornstein, einem Deflektor, welcher eine zentrale Oeffnung und daran anschliessend eine nach unten geneigte Oberfläche aufweist, und dass über dem erst genannten Deflektor ein zweiter, vollständig geschlossener Deflektor vorgesehen ist, der mindestens die zentrale Oeffnung des ersten Deflektors vollständig überdeckt.The present invention relates to a chimney hood for monitoring the draft in a chimney pipe, in particular a chimney, a deflector which has a central opening and then a downwardly inclined surface, and that a second, completely closed deflector is provided above the first-mentioned deflector which completely covers at least the central opening of the first deflector.

Eine Kaminhaube der eingangs genannten Art zeigt beispielsweise die CH-PS 638'288 (Mitchell). Diese bekannte Lösung zeigt zwischen dem ersten und zweiten Deflektor mehrere Lamellen, die wie die beiden Deflektoren je mit einer zentralen Oeffnung versehen sind. Zwischen dem oberen Deflektor und der obersten Lamellen ist ein kreisrundes Abweiselement angeordnet, welches aus zwei kegelförmigen gegeneinander gerichtete Bleche besteht, welches nach dem Venturiprinzip arbeitend den durchstreichenden Wind beschleunigt, wodurch ein Unterdruck im Kaminrohr entsteht, der den Zug des Kaminrohres erhöht.A chimney hood of the type mentioned initially shows, for example, CH-PS 638'288 (Mitchell). This known solution shows between the first and second deflectors a plurality of lamellae which, like the two deflectors, each have a central opening are. Between the upper deflector and the uppermost slats, a circular deflector element is arranged, which consists of two conical sheets facing each other, which works according to the Venturi principle and accelerates the wind blowing through, which creates a vacuum in the chimney pipe, which increases the draft of the chimney pipe.

Dieser Effekt ist wünschenswert, wenn die Feuerungsanlage die mit dem Kaminrohr in Verbindung steht in Betrieb genommen wird. Der Venturi-Effekt bleibt jedoch erhalten, wenn bereits die Betriebstemperatur erreicht ist und somit ein grosser termischer Auftrieb im Kamin wirkt. Dies führt dazu, dass während dem Dauerbetrieb ein hoher Energieverlust auftritt.This effect is desirable when the firing system connected to the chimney pipe is put into operation. The Venturi effect is retained, however, when the operating temperature has already been reached and thus a large thermal lift in the chimney. This means that there is a high energy loss during continuous operation.

Es ist die Aufgabe der vorliegenden Erfindung, einen Kaminhut der eingangs genannten Art derart zu verbessern, dass während der Anfeuerungsperiode der Venturi-Effekt erhalten bleibt, jedoch bei Erreichen einer bestimmten Betriebstemperatur im Kamin der thermische Auftrieb im Kaminrohr gebremst wird, wodurch der Energieverbrauch gesenkt wird.It is the object of the present invention to improve a chimney hat of the type mentioned in such a way that the venturi effect is retained during the lighting period, but the thermal lift in the chimney pipe is slowed down when a certain operating temperature in the chimney is reached, as a result of which the energy consumption is reduced .

Diese Aufgabe löst eine Kaminhaube der eingangs genannten Art mit den Merkmalen des kennzeichnenden Teiles des Patentanspruches 1. In der Zeichnung ist ein bevorzugtes Ausführungsbeispiel des Erfindungsgegenstandes dargestellt und anhand der nachfolgenden Beschreibung erläutert.

  • Figur 1 zeigt eine perspektivische Darstellung der Kaminhaube und
  • Figur 2 stellt die auf einen Kamin montierte Kaminhaube, teilweise im Schnitt, dar.
This object is achieved by a chimney hood of the type mentioned at the outset with the features of the characterizing part of patent claim 1. A preferred embodiment of the subject matter of the invention is shown in the drawing and explained with the aid of the following description.
  • Figure 1 shows a perspective view of the chimney hood and
  • Figure 2 shows the chimney mounted on a chimney, partly in section.

Die in der Figur dargestellte Kaminhaube umfasst zur Hauptsache zwei in einem bestimmten Abstand übereinander montierte Deflektoren 1 und 2, welche mittels Befestiguns- und Stützorganen 3,30 auf einem Kamin 4 befestigt sind. Beide Deflektoren zeigen einen kreisförmigen Aussenrand 5, wobei der untenliegende Deflektor 1 eine zentrale, ebenfalls kreisförmige Oeffnung 6 aufweist. Der Durchmesser dieser zentralen Oeffnung 6 liegt vorzugsweise in der Grössenordnung zwischen 38 und 45% des Aussendurchmesser des Deflektors 1. Der Aussendurchmesser ist so bemessen, dass er den äusseren Brüstungsrand des Kamins etwas überragt.The chimney hood shown in the figure mainly comprises two deflectors 1 and 2 mounted one above the other at a certain distance, which are fastened to a chimney 4 by means of fastening and support members 3.30. Both deflectors have a circular outer edge 5, the deflector 1 below having a central, likewise circular opening 6. The diameter of this central opening 6 is preferably in the order of magnitude between 38 and 45% of the outer diameter of the deflector 1. The outer diameter is dimensioned such that it slightly projects beyond the outer parapet edge of the fireplace.

Der Deflektor 2, der koaxial in einem bestimmten Abstand über den Deflektor 1 montiert ist, ist vollständig geschlossen, dass heisst er weist keine zentrale Oeffnung auf. Ansonsten ist die Oberflächenform 7 beider Deflektoren annähernd identisch. Genauer ist in dieser speziellen Ausführungsform die Oberfläche 7 beider Deflektoren 1 und 2 im Bereiche ihres äusseren Randes 5 konkav und geht in Richtung zur Mitte in eine konvexe Form über.The deflector 2, which is mounted coaxially at a certain distance above the deflector 1, is completely closed, which means that it has no central opening. Otherwise, the surface shape 7 of both deflectors is approximately identical. More precisely, in this special embodiment the surface 7 of both deflectors 1 and 2 is concave in the area of its outer edge 5 and changes into a convex shape in the direction towards the center.

Erfindungsgemäss ist zwischen den beiden Deflektoren 1 und 2, nahe genug über der zentralen Oeffnung 6 des unten liegenden Deflektors 1, eine Einengung 8 vorgesehen, so dass die durch die Oeffnung 6 aufsteigenden Gase, wie durch den Pfeil 9 angegeben, eine Beschleunigung beim Verlassen der Oeffnung erfahren. In der dargestellten Ausführungsform wird diese Verengung 8 durch eine zentrisch unter dem genannten zweiten Deflektor 2 vorgesehenen Leitblech 10 bestimmt, welches sich über der zentralen Oeffnung 6 erstreckt und eine zur Oeffnung gerichtete etwa kugelförmige Seite 11 aufweist. Folglich bewirkt das Leitblech in Zusammenwirkung mit der Oberfläche 7 des Deflektors 1 ein Venturi-Effekt. Das an der Unterseite des zweiten Deflektors 2 montierte Leitblech 10 bildet mit jenem einen Hohlraum 12. Das Leitblech 10 erstreckt sich mit seinem gewölbten Teil über der zentralen Oeffnung 6 des Deflektors 1 bis zu dessen inneren Rand 13. Dadurch entsteht unter dem zweiten Deflektor 2 ein ringförmiges, kuppelartiges Gewölbe 14.According to the invention, a constriction 8 is provided between the two deflectors 1 and 2, close enough above the central opening 6 of the deflector 1 below, so that the gases rising through the opening 6, as indicated by the arrow 9, accelerate when leaving the Experience opening. In the embodiment shown, this constriction 8 is determined by a guide plate 10 provided centrally under the second deflector 2 mentioned, which extends over the central opening 6 and has an approximately spherical side 11 directed towards the opening. Consequently, the baffle in cooperation with the surface 7 of the deflector 1 causes a venturi effect. That mounted on the underside of the second deflector 2 Baffle plate 10 forms a cavity 12 with it. The curved part of baffle plate 10 extends over the central opening 6 of the deflector 1 to its inner edge 13. This creates an annular, dome-like vault 14 under the second deflector 2.

Die gesamte Konstruktion der Kaminhaube ist so ausgelegt, dass sie ohne Schweissnaht mit lediglich wenigen Schrauben vollständig montiert beziehungsweise demontiert werden kann. Die Deflektoren 1 und 2, sowie das Leitblech 10, die in etwa horizontale Ebene verlaufende ringförmigen Bereiche aufweisen, sind mit übereinander angeordneten, korrespondierenden Durchgangslöchern versehen. Mittels Kunststoffschrauben 15, die durch die vorgenannten Durchgangslöcher führen, sind die beiden Teile auf Distanzbolzen 16 aus Kunststoff, die mit entsprechenden Gewinden versehen sind, fest aufeinander geschraubt. Die Distanzbolzen 16 stehen nahe dem inneren Rand 13 des unteren Deflektors 1 auf denselben auf und definieren den gewünschten Abstand zwischen den beiden Deflektoren 1 und 2. Unterhalb des unteren Deflektors 1 sind Stützorgane 17 angeordnet, die genau unter den Distanzbolzen 16 verlaufen. Auch die Stützorgane 17 sind mit Durchgangsbohrungen versehen, die mit den Durchgangsbohrungen im unteren Deflektor 1 in der Montagelage korrespondieren. Wiederum mit Kunststoffschrauben 18 sind die Stützorgane 17 zusammen mit dem Deflektor 1 an den Distanzbolzen 16 geschraubt. Die Stützorgane 3 haben die Form von aus striefenförmig zugeschnittenen Material gefertigten Auflagebügel, die im Randbereich 5 des unteren Deflektors 1 eine doppelte Umbiegung aufweisen. Die Auflagefläche 19 des Auflagebügels 17 kann mit einer vorgepressten Bugstelle versehen sein, damit die Auflagedistanz zwischen Kaminrand und dem äusseren Rand 5 des unteren Deflektors 1 höheneinstellbar ist. Die als Auflagebügel geformte Stützorgane 17 haben einen Arm 20, der vom inneren Rand 13 der zentralen Oeffnung des ersten Deflektors 1 im montierten Zustand nach unten in den Kamin hineinragen. Die unteren Enden der Arme 20, der Stützorgane 17 sind untereinander durch Befestigunsorgane 30 miteinander verbunden. Die Befestigungsorgane 30 bestehen aus einem Ring 31 sowie patinierten Schrauben 32 die den Ring 31 und je einen Arm 20 der Stützorgane 17 durchsetzen. Die Schrauben 32 sind mittels in den Armen 20 gehaltenen Schraubhülsen 33 gesichert.The entire construction of the chimney hood is designed so that it can be fully assembled or disassembled with just a few screws without a weld. The deflectors 1 and 2, as well as the guide plate 10, which have ring-shaped regions running in an approximately horizontal plane, are provided with corresponding through holes arranged one above the other. By means of plastic screws 15, which lead through the above-mentioned through holes, the two parts are firmly screwed together on plastic spacers 16, which are provided with corresponding threads. The spacer bolts 16 stand near the inner edge 13 of the lower deflector 1 thereon and define the desired distance between the two deflectors 1 and 2. Below the lower deflector 1, support members 17 are arranged which run exactly under the spacer bolts 16. The support members 17 are also provided with through holes that correspond to the through holes in the lower deflector 1 in the mounting position. Again with plastic screws 18, the support members 17 are screwed together with the deflector 1 to the spacer bolts 16. The support members 3 are in the form of support brackets made from material cut into a shape that has a double bend in the edge region 5 of the lower deflector 1. The support surface 19 of the support bracket 17 can be provided with a pre-pressed bow point so that the support distance between the edge of the chimney and the outer edge 5 of the lower deflector 1 can be adjusted in height. The shaped as a support bracket 17 have an arm 20 which protrude from the inner edge 13 of the central opening of the first deflector 1 in the assembled state down into the chimney. The lower ends of the arms 20, the support members 17 are interconnected by fastening members 30. The fastening members 30 consist of a ring 31 and patinated screws 32 which pass through the ring 31 and one arm 20 of the support members 17. The screws 32 are secured by means of screw sleeves 33 held in the arms 20.

Die Länge der Distanzbolzen definieren den Abstand zwischen dem oberen und dem unteren Deflektor. Je nach Grösse der Kaminhaube muss die Länge der Distanzbolzen 16 angepasst sein. Ist die Distanz zwischen den Deflektoren zu gross, so verflacht der gewünschte Effekt, ist die Distanz zwischen den Deflektoren 1 und 2 zu klein, so wird der Rückstau zu gross. Die Länge der Distanzbolzen 16 sollten zwischen 20 und 45% des Masses des Durchmessers der Oeffnung 6 betragen. Optimale Werte wurden bei einer Länge der Distanzbolzen von circa 30% des Durchmessers der Oeffnung 6 erzielt.The length of the spacer bolts define the distance between the upper and lower deflectors. Depending on the size of the chimney hood, the length of the spacer bolts 16 must be adjusted. If the distance between the deflectors is too large, the desired effect flattens out; if the distance between the deflectors 1 and 2 is too small, the backflow becomes too large. The length of the spacer bolts 16 should be between 20 and 45% of the size of the diameter of the opening 6. Optimal values were achieved with a length of the spacer bolts of approximately 30% of the diameter of the opening 6.

Im Nachfolgenden sei die wirkungsweise der erfindungsgemässen Kaminhaube kurz beschrieben.The mode of operation of the chimney hood according to the invention is briefly described below.

Beim Anheizen besteht im Kamin kaum ein thermischer Auftrieb. Jeder, auch der geringste Wind der durch die Kaminhaube streicht, wird zwischen den beiden Deflektoren 1 und 2 durch das Leitblech 10 beschleunigt, weil dieses einen Venturi-Effekt bewirkt. Hierdurch entsteht im Kaminrohr ein gewünschter Sog, der die Feuerung positiv beeinflusst. Nach einer gewissen Feuerungszeit hat sich der Kamin 4 erwärmt und der thermische Auftrieb im Kamin nimmt mehr und mehr zu. Ohne den gewünschten Wärmeaustauscheffekt genügend vollbracht zu haben, treten die erhitzten Gase nach aussen. Ist der thermische Auftrieb gross, so prallen die erhitzten Gase auf das Leitblech 10 und steigen in das ringförmige kuppelartige Gewölbe 14, wo sie vom oberen Deflektor 2 nach unten abgebogen werden und eine Turbulenz T bewirken. Die Turbulenz T verunmöglicht so einen Windeintritt und stoppen somit den Venturi-Effekt. Auf diese Weise wird der Austritt der erhitzten Gase aus dem Kamin 4 verzögert und damit ein unnötiger Wärmeverlust gebremst. Die vorhandene Thermik im Kamin bewirkt, dass trotzdem noch genügend Gase aus dem Kamin aufsteigen können. Die gestoppte Sogwirkung jedoch vermindert den Brand in der Feuerungsanlage, wodurch Heizenergie gespart werden kann.There is hardly any thermal buoyancy in the chimney when heating up. Everyone, even the slightest wind that blows through the chimney hood, is accelerated between the two deflectors 1 and 2 by the guide plate 10, because this causes a Venturi effect. This creates a desired suction in the chimney pipe, which has a positive effect on the furnace. After a certain firing time, the chimney 4 has warmed up and the thermal buoyancy in the chimney increases more and more. Without the one you want When the heat exchange effect has been sufficiently achieved, the heated gases escape to the outside. If the thermal buoyancy is high, the heated gases hit the baffle 10 and rise into the annular dome-like vault 14, where they are bent downwards by the upper deflector 2 and cause turbulence T. The turbulence T thus prevents the entry of wind and thus stops the venturi effect. In this way, the escape of the heated gases from the chimney 4 is delayed and thus unnecessary heat loss is slowed down. The existing thermals in the chimney mean that enough gases can still rise from the chimney. The stopped suction effect, however, reduces the fire in the furnace, which can save heating energy.

Claims (11)

1. Kaminhaube zur Ueberwachung des Zuges in einem Kaminrohr, insbesondere einen Schornstein, mit einem Deflektor, welcher eine zentrale Oeffnung und daran anschliessend eine nach unten geneigte Oberfläche aufweist, und dass über dem erstgenannten Deflektor ein zweiter, vollständig geschlossener Deflektor vorgesehen ist, der mindestens die zentrale Oeffnung des ersten Deflektors vollständig überdeckt, dadurch gekennzeichnet, dass an der Unterseite des zweiten, oberen Deflektors (2) über der Oeffnung (6) des ersten Deflektors (1) ein kalottenförmiges Leitblech (10) angeordnet ist, dessen Durchmesser kleiner als der Durchmesser des oberen Deflektors (2) ist, wobei über dem inneren Rand (13) der zentralen Oeffnung (6) im ersten Deflektor (1) im Anschlussbereich zwischen dem Leitblech (10) und dem zweiten Deflektor (2) ein ringförmiges, kuppelartiges Gewölbe (14) gebildet ist.1. Chimney hood for monitoring the draft in a chimney pipe, in particular a chimney, with a deflector which has a central opening and then a downwardly inclined surface, and that a second, completely closed deflector is provided above the first-mentioned deflector, which at least completely covers the central opening of the first deflector, characterized in that a dome-shaped guide plate (10), the diameter of which is smaller than that, is arranged on the underside of the second, upper deflector (2) above the opening (6) of the first deflector (1) The diameter of the upper deflector (2) is above the inner edge (13) of the central opening (6) in the first deflector (1) in the connection area between the guide plate (10) and the second deflector (2) annular, dome-like vault (14) is formed. 2. Kaminhaube nach Anspruch 1, dadurch gekennzeichnet, dass die Oberfläche des unteren Deflektors (1) im äusseren Randbereich konkav und zur Mitte hin konvex geformt ist.2. Chimney hood according to claim 1, characterized in that the surface of the lower deflector (1) is concave in the outer edge region and convex towards the center. 3. Kaminhaube nach Anspruch 2, dadurch gekennzeichnet, dass die beiden Deflektoren (1,2) im überlappenden Bereich annähernd identische Oberflächen aufweisen.3. Chimney hood according to claim 2, characterized in that the two deflectors (1, 2) have approximately identical surfaces in the overlapping area. 4. Kaminhaube nach Anspruch 1, dadurch gekennzeichnet, dass die beiden Deflektoren (1,2) lösbar miteinander verbunden sind.4. Chimney hood according to claim 1, characterized in that the two deflectors (1,2) are detachably connected together. 5. Kaminhaube nach Anspruch 4, dadurch gekennzeichnet, dass die Deflektoren (1,2) über Distanzbolzen (16) aus Kunststoff mittels Kunststoffschrauben (15,18) lösbar miteinander verbunden sind.5. Chimney hood according to claim 4, characterized in that the deflectors (1, 2) are detachably connected to one another via plastic spacer bolts (16) by means of plastic screws (15, 18). 6. Kaminhaube nach Anspruch 1, dadurch gekennzeichnet, das der erste Deflektor (1) mit Stütz- und Befestigungsorganen (3,30) versehen ist, womit die Haube auf einem wählbaren Abstand über dem Kaminrohr (4) befestigbar ist.6. chimney hood according to claim 1, characterized in that the first deflector (1) is provided with support and fastening members (3,30), whereby the hood at a selectable distance above the chimney pipe (4) can be fastened. 7. Kaminhaube nach Anspruch 6, dadurch gekennzeichnet, dass die Stützorgane (3) Auflagebügel (17) aufweisen die an der Unterseite des unteren Deflektors (1) befestigt und mit einer vorgepressten Bugstelle versehen sind.7. Chimney hood according to claim 6, characterized in that the support members (3) have support brackets (17) which are attached to the underside of the lower deflector (1) and are provided with a pre-pressed bow point. 8. Kaminhaube nach Anspruch 6, dadurch gekennzeichnet, dass die Befestigungsorgane (30) aus einem Ring (31) und darin gehaltene, radial nach aussen gerichteten Schrauben (32) bestehen.8. Chimney hood according to claim 6, characterized in that the fastening members (30) consist of a ring (31) and held therein, radially outwardly directed screws (32). 9. Kaminhaube nach Anspruch 5, dadurch gekennzeichnet, dass beide Deflektoren (1,2) und das kalottenförmige Leitblech (10) je eine deckungsgleich übereinander angeordnete in annähernd horizontalen Ebenen verlaufende ringförmige Bereiche aufweisen, durch welche die Kunststoffschrauben (15,68) verlaufen und in die Distanzbolzen (16), die ebenso auf diesen Bereichen aufliegen, geschraubt sind, wobei dieselben beidseitig mit Gewinde versehen sind.9. Chimney hood according to claim 5, characterized in that both deflectors (1, 2) and the dome-shaped guide plate (10) each have a congruently arranged, approximately horizontal planes extending annular areas through which the plastic screws (15, 68) run and are screwed into the spacer bolts (16), which also rest on these areas, the same being threaded on both sides. 10. Kaminhaube nach den Ansprüchen 5,7 und 8, dadurch gekennzeichnet, dass die Auflagebügel (17) einseitig so verlängert sind, dass sie an der Unterseite des ersten Deflektors bis zur zentralen Oeffnung verlaufen und dort senkrecht nach unten zum Ring (31), wobei sie von den Kunststoffschrauben (18) die in den Distanzbolzen (16) greifen, sowie von den Befestigungsschrauben (32) durchsetzt sind.10. chimney hood according to claims 5, 7 and 8, characterized in that the support brackets (17) are extended on one side so that they run on the underside of the first deflector up to the central opening and there perpendicular to the ring (31), whereby they are penetrated by the plastic screws (18) which engage in the spacer bolts (16) and by the fastening screws (32). 11. Kaminhaube nach Anspruch 1, dadurch gekennzeichnet, dass die Länge der Distanzbolzen (16) zwischen 20 und 45% des Masses des Durchmessers der Oeffnung (6) im unteren Deflektor (1) beträgt.11. Chimney hood according to claim 1, characterized in that the length of the spacer bolts (16) is between 20 and 45% of the size of the diameter of the opening (6) in the lower deflector (1).
EP86810122A 1985-08-09 1986-03-12 Chimney top for the draught control in a flue Expired - Lifetime EP0214087B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT86810122T ATE39020T1 (en) 1985-08-09 1986-03-12 CHIMNEY HOOD FOR MONITORING THE DRAW IN A CHIMNEY PIPE.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
BE0/215453A BE903043A (en) 1985-08-09 1985-08-09 Draught-controlling chimney cowl - has narrow passage accelerating gases between coaxial top and bottom deflectors
BE215453 1985-08-09

Publications (3)

Publication Number Publication Date
EP0214087A1 true EP0214087A1 (en) 1987-03-11
EP0214087B1 EP0214087B1 (en) 1988-11-30
EP0214087B2 EP0214087B2 (en) 1993-01-27

Family

ID=3843918

Family Applications (1)

Application Number Title Priority Date Filing Date
EP86810122A Expired - Lifetime EP0214087B2 (en) 1985-08-09 1986-03-12 Chimney top for the draught control in a flue

Country Status (3)

Country Link
EP (1) EP0214087B2 (en)
AT (1) ATE39020T1 (en)
DE (1) DE3661333D1 (en)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0753703A2 (en) * 1995-07-12 1997-01-15 Robert Hodgson Cowl
GB2303202A (en) * 1995-07-12 1997-02-12 Robert Hodgson Cowl
FR2846073A1 (en) 2002-10-21 2004-04-23 Michel Zaniewski Anti-flowback static smoke extractor comprises annular base, with curved upper face extended upwards by cylindrical flange, surmounted by cowl to delimit Venturi passage
WO2005071318A1 (en) * 2004-01-22 2005-08-04 Novatex Perfekt S.R.O. Chimney head, intended especially for flue gas venting
EP2933558A1 (en) 2014-04-16 2015-10-21 WeLiPa AG Wind deflector and wind deflector system
CN109114578A (en) * 2018-10-25 2019-01-01 泰山学院 A kind of chimney cap for preventing flue gas from flowing backward and to can promote indoor and outdoor air exchange

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1088908A (en) * 1964-12-03 1967-10-25 Gulf Oil Corp Venting apparatus
CH552176A (en) * 1972-05-01 1974-07-31 Pernet Edmond CHIMNEY CAPE.
BE903043A (en) * 1985-08-09 1985-12-02 Weidmann Rosemarie Draught-controlling chimney cowl - has narrow passage accelerating gases between coaxial top and bottom deflectors

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1088908A (en) * 1964-12-03 1967-10-25 Gulf Oil Corp Venting apparatus
CH552176A (en) * 1972-05-01 1974-07-31 Pernet Edmond CHIMNEY CAPE.
BE903043A (en) * 1985-08-09 1985-12-02 Weidmann Rosemarie Draught-controlling chimney cowl - has narrow passage accelerating gases between coaxial top and bottom deflectors

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0753703A2 (en) * 1995-07-12 1997-01-15 Robert Hodgson Cowl
GB2303202A (en) * 1995-07-12 1997-02-12 Robert Hodgson Cowl
EP0753703A3 (en) * 1995-07-12 1998-06-17 Robert Hodgson Cowl
GB2303202B (en) * 1995-07-12 2000-01-26 Robert Hodgson Cowl
FR2846073A1 (en) 2002-10-21 2004-04-23 Michel Zaniewski Anti-flowback static smoke extractor comprises annular base, with curved upper face extended upwards by cylindrical flange, surmounted by cowl to delimit Venturi passage
EP1413827A1 (en) * 2002-10-21 2004-04-28 Michel Zaniewski Antireflux fume extractor
WO2005071318A1 (en) * 2004-01-22 2005-08-04 Novatex Perfekt S.R.O. Chimney head, intended especially for flue gas venting
EP2933558A1 (en) 2014-04-16 2015-10-21 WeLiPa AG Wind deflector and wind deflector system
CN109114578A (en) * 2018-10-25 2019-01-01 泰山学院 A kind of chimney cap for preventing flue gas from flowing backward and to can promote indoor and outdoor air exchange
CN109114578B (en) * 2018-10-25 2024-02-27 泰山学院 Chimney cover capable of preventing flue gas from flowing backward and promoting indoor and outdoor air exchange

Also Published As

Publication number Publication date
EP0214087B1 (en) 1988-11-30
ATE39020T1 (en) 1988-12-15
DE3661333D1 (en) 1989-01-05
EP0214087B2 (en) 1993-01-27

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