EP0214087B2 - Chapeau de cheminée pour contrôler le tirage d'une cheminée - Google Patents

Chapeau de cheminée pour contrôler le tirage d'une cheminée Download PDF

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Publication number
EP0214087B2
EP0214087B2 EP86810122A EP86810122A EP0214087B2 EP 0214087 B2 EP0214087 B2 EP 0214087B2 EP 86810122 A EP86810122 A EP 86810122A EP 86810122 A EP86810122 A EP 86810122A EP 0214087 B2 EP0214087 B2 EP 0214087B2
Authority
EP
European Patent Office
Prior art keywords
deflector
chimney
central opening
deflectors
brackets
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 - Lifetime
Application number
EP86810122A
Other languages
German (de)
English (en)
Other versions
EP0214087A1 (fr
EP0214087B1 (fr
Inventor
Anthony Neefs
Hans Jörg Weidmann
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.)
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/nl
Application filed by Roweco filed Critical Roweco
Priority to AT86810122T priority Critical patent/ATE39020T1/de
Publication of EP0214087A1 publication Critical patent/EP0214087A1/fr
Application granted granted Critical
Publication of EP0214087B1 publication Critical patent/EP0214087B1/fr
Publication of EP0214087B2 publication Critical patent/EP0214087B2/fr
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 at the beginning shows, for example, CH-A638'288 (Mitchell).
  • This known solution shows between the first and second deflectors a plurality of lamellae which, like the two deflectors, are each provided with a central opening. 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.
  • 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 supporting 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, that is to say 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 of 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 named second deflector 2, which extends over the central opening 6 and has an approximately spherical side 11 directed towards the opening.
  • the guide plate in cooperation with the surface 7 of the deflector 1, creates a negative pressure.
  • the guide plate 10 mounted on the underside of the second deflector 2 forms a cavity 12 with the latter.
  • the curved part of the guide plate 10 extends over the central opening 6 of the deflector 1 to its inner edge 13. This results in an under the second deflector 2 annular, dome-like vault 14.
  • 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 bores which correspond to the through bores in the lower deflector 1 in the installed 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 have the form of support brackets made of 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.

Landscapes

  • 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)

Claims (10)

1. Chapeau de cheminée pour le contrôle du tirage dans un conduit de cheminée, en particulier une ouverture d'usine, avec un déflecteurqui présente une ouverture centrale et une surface contiguë inclinée vers le bas, un deuxième déflecteur complètement fermé étant prévu au-dessus du premier déflecteur nommé, et recouvrant au moins complètement l'ouverture centrale du premier déflecteur, caractérisé en ce qu'une tôle directrice (10) en forme de calotte est montée sur la face inférieure du deuxième déflecteur (2) supérieur, au-dessus de l'ouverture (6) du premier déflecteur (1), son diamètre étant inférieur au diamètre du déflecteur supérieur (2), cette tôle dire- trice s'étendant sur l'ouverture centrale (6) et présentant une face en forme de boule (11) tournée vers l'ouverture nommé, et qu'une voûte annulaire (14) en forme de coupole est réalisée dans le premier déflecteur (1) dans la zone de raccordement entre la tôle directrice (10) et le deuxième déflecteur (2), au-dessus du bord intérieur (13) de l'ouverture centrale (6) et la surface du premier déflecteur (1) est réalisée concave sur sa bordure extérieure et convexe vers le centre.
2. Chapeau de cheminée suivant la revendication 1, caractérisé en ce que les deux déflecteurs (1, 2) présentent, dans leur zone de recouvrement, des surfaces approximativement identiques.
3. Chapeau de cheminée suivant la revendication 1, caractérisé en ce que les deux déflecteurs (1, 2) sont reliés entre eux de façon démontable.
4. Chapeau de cheminée suivant la revendication 3, caractérisé en ce que les déflecteurs (1, 2) son reliés entre eux de façon démontable au moyen de vis en matière plastique (15, 18), par l'intermédiaire de boulons d'écartement (16).
5. Chapeau de cheminée suivant la revendication 1, caractérisé en ce que le premier déflecteur (1) est pourvu d'éléments d'appui et de fixation (3, 30) à l'aide desquels le chapeau peut être fixé sur le conduit de cheminée à une distance choisie.
6. Chapeau de cheminée suivant la revendication 5, caractérisé en ce que les éléments d'appui (3) présentent des étriers d'appui (17) fixés sur la face inférieure du déflecteur inférieur (1) et pourvus d'un épaulement ébauché à la presse.
7. Chapeau de cheminée suivant la revendication 5, caractérisé en ce que les organes de fixation (30) sont constitués d'un anneau (31) et de vis dirigées radialement vers l'extérieur, maintenus dans l'anneau.
8. Chapeau de cheminée suivant la revendication 4, caractérisé en ce que les deux déflecteurs (1, 2) et la tôle directrice (10) en forme de calotte présentent des zones circulaires égales et superposées dans des plans à peu près horizontaux, à travers lesquelles les vis en matière plastique (15, 16) passent et sont vissées sur les boulons d'écartement (16) qui s'appuient également sur ces zones et qui sont filetées à leurs deux extrémités.
9. Chapeau de cheminée suivant les revendications 4, et 7, caractérisé en ce que les étriers d'appui (17) son prolongés d'un côté, en sorte qu'il courent sur la face inférieure du premier déflecteur jusqu'à l'ouverture centrale et de là descendent verticalement jusqu'à l'anneau (31), tout en étant combinés à des vis en matière plastique (18) qui vont dans les anneaux d'écartement (16) ainsi qu'aux vis de fixation (32).
10. Chapeau de cheminée suivant la revendication 1, caractérisé en ce que en ce que la longueur des boulons d'écartement (16) est comprise entre 20 et 45 % du diamètre de l'ouverture (6) dans le déflecteur inférieur.
EP86810122A 1985-08-09 1986-03-12 Chapeau de cheminée pour contrôler le tirage d'une cheminée Expired - Lifetime EP0214087B2 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT86810122T ATE39020T1 (de) 1985-08-09 1986-03-12 Kaminhaube zur ueberwachung des zuges in einem kaminrohr.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
BE0/215453A BE903043A (nl) 1985-08-09 1985-08-09 Schoorsteenkap voor het onder controle houden van de trek in gasafvoerkanalen.
BE215453 1985-08-09

Publications (3)

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

Family

ID=3843918

Family Applications (1)

Application Number Title Priority Date Filing Date
EP86810122A Expired - Lifetime EP0214087B2 (fr) 1985-08-09 1986-03-12 Chapeau de cheminée pour contrôler le tirage d'une cheminée

Country Status (3)

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

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0753703B1 (fr) * 1995-07-12 2003-05-14 Robert Hodgson Chapeau de cheminée
GB9514174D0 (en) * 1995-07-12 1995-09-13 Hodgson Robert Cowl
FR2846073B1 (fr) * 2002-10-21 2005-01-14 Michel Zaniewski Extracteur statique antireflueur pour fumees
CZ14206U1 (cs) * 2004-01-22 2004-04-05 Novatex Perfekt S. R. O. Komínová hlavice, zejména pro odvod spalin
DE202014101816U1 (de) 2014-04-16 2015-07-20 Welipa Ag Windabweiser sowie Windabweisersystem
CN109114578B (zh) * 2018-10-25 2024-02-27 泰山学院 一种防止烟气倒灌并可促进室内外空气交换的烟囱罩

Family Cites Families (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 (fr) * 1972-05-01 1974-07-31 Pernet Edmond Cape de cheminee.
BE903043A (nl) * 1985-08-09 1985-12-02 Weidmann Rosemarie Schoorsteenkap voor het onder controle houden van de trek in gasafvoerkanalen.

Also Published As

Publication number Publication date
EP0214087A1 (fr) 1987-03-11
EP0214087B1 (fr) 1988-11-30
DE3661333D1 (en) 1989-01-05
ATE39020T1 (de) 1988-12-15

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