EP1962017B1 - Dispositif destiné à empêcher un écoulement de retour des gaz d'échappement dans une chaudière - Google Patents

Dispositif destiné à empêcher un écoulement de retour des gaz d'échappement dans une chaudière Download PDF

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Publication number
EP1962017B1
EP1962017B1 EP08000896.4A EP08000896A EP1962017B1 EP 1962017 B1 EP1962017 B1 EP 1962017B1 EP 08000896 A EP08000896 A EP 08000896A EP 1962017 B1 EP1962017 B1 EP 1962017B1
Authority
EP
European Patent Office
Prior art keywords
flap part
holder
supply air
flap
air pipeline
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.)
Not-in-force
Application number
EP08000896.4A
Other languages
German (de)
English (en)
Other versions
EP1962017A2 (fr
EP1962017A3 (fr
Inventor
Hajo Wilken
Holger Cording
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.)
August Brotje GmbH
Original Assignee
August Brotje 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 August Brotje GmbH filed Critical August Brotje GmbH
Priority to PL08000896T priority Critical patent/PL1962017T3/pl
Publication of EP1962017A2 publication Critical patent/EP1962017A2/fr
Publication of EP1962017A3 publication Critical patent/EP1962017A3/fr
Application granted granted Critical
Publication of EP1962017B1 publication Critical patent/EP1962017B1/fr
Not-in-force legal-status Critical Current
Anticipated expiration legal-status Critical

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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
    • F23L11/005—Arrangements of valves or dampers after the fire for closing the flue during interruption of burner function
    • 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 device for preventing an exhaust gas recirculation in a boiler in the overpressure operation, wherein a plurality of boilers have a common exhaust pipe, and a supply air line of each boiler has a cross-section occluding blocking member, wherein the blocking member is designed as a non-return valve, wherein the non-return valve Has at least one flap part which is articulated pivotably on a frame-like attitude, and wherein the holder is designed as insertable into the supply air line.
  • the DE202006010099 U1 discloses a device for preventing backflow of exhaust gas in a boiler according to the preamble of claim 1.
  • the invention has for its object to provide a device which ensures a permanent sealing function and is simple and therefore inexpensive to produce.
  • the non-return valve according to the invention is particularly reliable.
  • a frame-like holder in conjunction with the hinged thereto flap part, it is possible to form a device according to the invention, which, due to their simple design, in the supply air lines a variety of different blower burners can be integrated in an advantageous manner.
  • the holder is designed as a built-in insert, already in operation boilers can be easily retrofitted with such inventively designed devices.
  • the flap member may have a rectangular orientation to the flow direction in its closed position and is connected via a pivot bearing with the holder, which for the purpose of smooth running has a radial clearance to allow an advantageous free pivoting movement of the flap part.
  • the installation position of the frame-like holder can be aligned both horizontally and vertically.
  • the device according to the invention has a tumbler for the flap part.
  • the tumbler advantageously ensures that the flap portion, after the negative pressure and thus the flow in the supply air line generating fan burner of the boiler has been turned off, is held in its closed position and completely closes the preferably circular opening of the frame-like support.
  • the tumbler can be done for example by means of a spring element which engages with a predetermined spring force on the flap part and a corresponding contact pressure between Damper and bracket causes. It is also conceivable to use movably guided closing weights, such as a ball, on the flap part of the device for forming a tumbler. The movable closing weights cause a shift of the center of gravity of the flap part during the opening movement in the direction of its pivot bearing.
  • the design of the tumbler as a magnetic closure provides a structurally simple way to implement a tumbler. Unlike a spring element acting on the flap part, a magnetic closure preferably exerts its greatest holding force directly in or close to the closed position of the flap part. However, as soon as the holding force between the permanent magnet and the counterpart arranged on the flap part is overcome at the beginning of an opening movement of the flap part, the flap part can move freely. Furthermore, with the aid of the permanent magnet used and preferably designed as a metal part counterpart on the flap part, wherein the permanent magnet can also be arranged on the flap part and the counterpart on the frame-like support, ensure a reliable long-term function of the tumbler. It is of course also possible to use other, a holding force generating functional parts in place of the permanent magnet.
  • the flap level of the flap part can be aligned in its closed position at an angle of 40 ° to 70 ° to the longitudinal axis of the holder inserted in the supply air line.
  • the oblique orientation of the flap plane of the flap part to the longitudinal axis of the frame-like holder ensures that, in particular in a horizontally extending supply air line, always a cross-sectional area of the supply air line By means of the flap part obstructing closed position is given. Due to the oblique orientation of the flap plane, the dead weight of the flap part generates a force acting between the contact surfaces of the holder and the flap part contact pressure, with the help of operating shutdown at the same time an advantageous sealing of the contact surfaces is effected together.
  • the angle between the flap plane of the flap part and extending in the central center of the holder central longitudinal axis of the holder is preferably about 65 °.
  • the flap part is equipped with closing weights.
  • closing weights allows in an advantageously simple manner an increase in the dead weight of the flap part, so that the return movement of the flap part is done safely in its closed position after switching off the fan burner.
  • the number or size of the closing weights used can vary with regard to the necessary closing force and the associated operating behavior of a designed as a check valve device for flow control.
  • the closing weights are preferably arranged outside the center of gravity of the flap part, in particular in a region approximated to the pivot bearing, in such a way that an optimum sealing effect is always ensured in the region of the play-bearing pivot bearing.
  • the flap part and the flap part associated with the holder have abuttable sealing surfaces.
  • the sealing surfaces cause a seal between the contact surfaces of the flap part and the holder is improved; because the trained as sealing surfaces contact surfaces ensure optimum sealing effect when the flap part of the device according to the invention is in the closed position.
  • the surface of the flap part and the Holder can be processed in the region of their sealing surfaces, for example by means of a cutting process, so that each of the sealing surfaces receives a corresponding surface quality for optimum sealing function.
  • the material for the sealing surface of the holder is a soft-elastic material.
  • the use of a soft elastic material for forming a sealing surface of the holder has the advantage that it, due to its elastic properties, can compensate for certain manufacturing tolerances, whereby an optimal seal between the flap part and holder is guaranteed.
  • the soft elastic material can be in an advantageously simple manner to appropriate contours surfaces having, for example, spray.
  • a flexible material for example, a polyurethane elastomer can be used.
  • the frame-like support is advantageously an annular body, whose in the supply air line projecting, upstream surfaces have a streamlined shape. Due to the flow-favorable shaping of the supply air line projecting, upstream surfaces of the holder, the flow or pressure losses occurring in the supply air line are kept as low as possible. It is of course also possible to provide instead of a circular ring body a square configuration of the holder, which can then be integrated into, for example, a rectangular Zu Kunststoff- or suction of the respective boiler.
  • the holder has a receptacle, and the receptacle comprises at least one guide for the permanent magnet.
  • the permanent magnet can advantageously be easily along the particular guide surfaces having the inner lateral surface of the socket move.
  • a displacement of the permanent magnet in the receptacle causes a change in distance and thus a corresponding enlargement or reduction of the force acting on the counterpart, and thus the flap part, magnetic holding force.
  • the individual adjustability of the holding force is particularly advantageous when the device according to the invention is to show a matched to the corresponding performance characteristics of a respective associated blower burner performance.
  • the receptacle is preferably arranged parallel to the longitudinal axis of the supply air line in the annular body of the holder.
  • the material for the flap part is in particular plastic, wherein the application is preferably a polyethylene.
  • the material used has advantageous properties in terms of its low density and the associated low dead weight, so that can be safely folded out by means of the incoming air through the supply air supply line made of plastic flap part of the flow cross section of the supply air line.
  • the material for the holder is a plastic.
  • the plastic has the advantage that it can be processed by means of advantageous manufacturing processes, such as injection molding. Of course, other pourable materials can be used, especially zinc and aluminum.
  • the supply air line has at least one piece of pipe, in which the check valve is received, wherein the pipe wall of the pipe section has outwardly directed bulges for the pivotable flap part.
  • the training of the outside directed bulges in the pipe wall of the pipe section ensures that the flap part of the check valve can perform its folding movements without hindrance.
  • the flap part can be folded by these bulges preferably in a position approximated to the pipe wall.
  • the holder has at least one positioning aid for a predetermined installation position in the supply air line. With the help of the positioning a corresponding orientation of the device during installation in a piece of pipe of the supply air line. This ensures that the flap part after installation is at the correct functional angle to the inflow of incoming air.
  • the positioning can be designed in particular as located on the outer contour of the holder, protruding positive-locking parts, which engage in associated, embedded in the wall of the supply air intake recordings.
  • Fig. 1 shows a check valve 1, which is arranged in particular in a pipe section 2 of a supply air line.
  • the non-return flap 1 has a frame-like holder 3 designed here as an annular body, on which a flap part 4 is articulated in a hinged manner.
  • the flap part is arranged in its closed position transversely to the flow direction of the supply air line.
  • An arrangement at a predetermined angle to its longitudinal axis is also readily possible.
  • the flap part 4 is articulated on one side at one point of its circumference via a pivot bearing 5, so that the flap part 4 is free to move freely in the flow direction of the supply air.
  • the flap part 4 If the supply of supply air is stopped, then the flap part 4 returns to its closed position and prevents backflow of exhaust gases against the flow direction of the supply air.
  • the check valve 1 is further equipped with a designed as a magnetic closure tumbler 8 for the flap part 4, which exerts a predetermined holding force on the flap part 4.
  • the tumbler 8 has a permanent magnet 9, which is associated with a arranged on the flap part 4 counterpart 10.
  • the permanent magnet 9 and the counterpart 10 are in particular in the closed position of the flap part 4 together in a holding operative connection.
  • Fig. 2 shows in particular a sectional view of the check valve 1 and the check valve 1 receiving pipe section 2 of the supply air line.
  • upstream surfaces 11 of the holder 3 have a streamlined shape.
  • the tube piece has outwardly directed bulges 12, 13 (FIG. Fig. 1 ) for the pivoting Flap part 4 on.
  • the bulges 12, 13 increase the opening angle of the flap part and limit it at the same time in a predetermined manner, so that the flap part coincides when switching off the fan burner (flow arrest) by gravity again. Opening the flap part 4 guaranteed.
  • the flap part 4 is additionally provided with closing weights 14, which ensure an optimal seal of the flap part 4 in the region of preferably a game-bearing pivot bearing 5 in case of interruption of the supply air.
  • the holder 3 has a receptacle 15 in the form of a plug-in socket, in which the permanent magnet 9 is held in a sliding manner.
  • About the recording 15 can be a stepless change of the force acting between the permanent magnet 9 and the counterpart 10 holding force make, whereby an optimal adjustability of the tumbler 8 is given with respect to a predetermined performance of the check valve 1.
  • Fig. 3 another embodiment of a check valve 20 is shown.
  • the flap plane of the flap member 21 is aligned in the closed position at a predetermined angle to the longitudinal axis of the flap member receiving bracket 22.
  • Both the flap part 21 and the holder 22 have sealing surfaces 23, 24 which can be brought into abutment with each other, wherein in particular the sealing surface 23 of the holder consists of a soft-elastic material.
  • the non-return valve 20 is also provided with a designed as a magnetic closure tumbler 25 for the flap part.
  • the tumbler having a permanent magnet 26 is associated with a metallic counterpart 27, which is arranged on the flap part 21.
  • the check valve 20 is equipped with a positioning aid 29, which always ensures a defined mounting position of the check valve in the supply air line of a boiler.
  • the positioning aid 29 is a notch, which is introduced into a circumferential projection of the holder designed as a ring body. In the notch can engage a correspondingly formed on the supply air pipe fitting.

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Feeding And Controlling Fuel (AREA)
  • Incineration Of Waste (AREA)
  • Lift Valve (AREA)

Claims (11)

  1. Dispositif destiné à empêcher un écoulement de retour des gaz d'échappement dans une chaudière en fonctionnement en surpression, plusieurs chaudières comportant une conduite de gaz d'échappement commune et un conduit d'arrivée d'air de chaque chaudière comportant un organe d'arrêt fermant sa section, l'organe d'arrêt étant configuré comme clapet antiretour (1,20), le clapet antiretour (1,20) comportant au moins une partie de clapet (4,21), laquelle est articulée mobile en pivotement sur une fixation de type cadre (3,22) et la fixation (3,22) étant constituée comme pièce d'insertion encastrable dans le conduit d'arrivée d'air, caractérisé en ce qu'il est équipé d'un verrouillage (8,25) pour la partie de clapet (4,21), le verrouillage (8,25) étant configuré comme fermeture magnétique, qui comporte au moins un aimant permanent (9,26) auquel est attribué une contre-pièce disposée sur la partie de clapet (4,21).
  2. Dispositif selon la revendication 1, caractérisé en ce que le plan de clapet de la partie de clapet (21) est orienté dans la position de fermeture dans un angle de 40° à 70° par rapport à l'axe longitudinal médian de la fixation (22) insérable dans le conduit d'arrivée d'air.
  3. Dispositif selon la revendication 1 et 2, caractérisé en ce que des poids de fermeture (14) sont disposés sur la partie de clapet (4).
  4. Dispositif selon l'une quelconque des revendications 1 à 3, caractérisé en ce que la partie de clapet (4,21) et la fixation (3,22) attribuée à la partie de clapet comportent des surfaces d'étanchéité pouvant être mises en appui entre elles (6,7,23,24).
  5. Dispositif selon la revendication 4, caractérisé en ce que le matériau pour la surface d'étanchéité (6,23) de la fixation (3,22) est un matériau élastique mou.
  6. Dispositif selon l'une quelconque des revendications 1 à 5, caractérisé en ce que la fixation de type cadre (3,22) est un corps annulaire dont les surfaces (11) du côté de l'écoulement affluant dépassant dans le conduit d'arrivée d'air présentent une conformation favorable à l'écoulement.
  7. Dispositif selon l'une quelconque des revendications précédentes, caractérisé en ce que la fixation (3,22) comporte un logement (15,28) pour l'aimant permanent (9,26) qui est constitué comme guidage pour l'aimant permanent (26).
  8. Dispositif selon l'une quelconque des revendications précédentes, caractérisé en ce que le matériau pour la partie de clapet (4,21) est de la matière plastique.
  9. Dispositif selon l'une quelconque des revendications précédentes, caractérisé en ce que le matériau pour la fixation (3,22) est de la matière plastique.
  10. Dispositif selon l'une quelconque des revendications précédentes, caractérisé en ce que le conduit d'arrivée d'air comporte au moins une pièce tubulaire (2) dans laquelle le clapet antiretour (1) est logé et en ce que la paroi tubulaire de la pièce tubulaire (2) comporte des bombements orientés vers l'extérieur (12,13), qui sont disposés dans la trajectoire de pivotement décrite par le bord extérieur de la partie de clapet.
  11. Dispositif selon l'une quelconque des revendications précédentes, caractérisé en ce que la fixation (22) comporte au moins une assistance de positionnement (29) pour une position de montage prédéfinie dans le conduit d'arrivée d'air.
EP08000896.4A 2007-02-23 2008-01-18 Dispositif destiné à empêcher un écoulement de retour des gaz d'échappement dans une chaudière Not-in-force EP1962017B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PL08000896T PL1962017T3 (pl) 2007-02-23 2008-01-18 Urządzenie do unikania przepływu wstecznego gazów odlotowych w kotle grzejnym

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE202007002662U DE202007002662U1 (de) 2007-02-23 2007-02-23 Vorrichtung zur Vermeidung einer Abgasrückströmung bei einem Heizkessel

Publications (3)

Publication Number Publication Date
EP1962017A2 EP1962017A2 (fr) 2008-08-27
EP1962017A3 EP1962017A3 (fr) 2013-01-16
EP1962017B1 true EP1962017B1 (fr) 2017-10-04

Family

ID=38038355

Family Applications (1)

Application Number Title Priority Date Filing Date
EP08000896.4A Not-in-force EP1962017B1 (fr) 2007-02-23 2008-01-18 Dispositif destiné à empêcher un écoulement de retour des gaz d'échappement dans une chaudière

Country Status (3)

Country Link
EP (1) EP1962017B1 (fr)
DE (1) DE202007002662U1 (fr)
PL (1) PL1962017T3 (fr)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ITMI20120523A1 (it) * 2012-03-30 2013-10-01 Polidoro Spa Dispositivo a saracinesca mobile per bruciatori
DE102015204351A1 (de) * 2015-03-11 2016-09-15 Kutzner + Weber Gmbh Gasleitungselement, insbesondere Abgasleitungselement für eine Abgasanlage
EP3705779A1 (fr) * 2019-03-08 2020-09-09 Centrotherm Systemtechnik GmbH Système de conduit de fumées
EP4660496A1 (fr) 2024-06-05 2025-12-10 Beck, Klaus Clapet anti-retour automatique, tube fonctionnel et conduite

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2003036181A1 (fr) * 2001-10-26 2003-05-01 LK Luftqualität AG Dispositif de securite destine a l'air d'au moins un local d'un batiment
DE202006010099U1 (de) * 2005-01-31 2006-09-07 Vaillant Gmbh Vorrichtung zur Vermeidung von Abgasrückströmung beim Einsatz von Heizgeräten

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2654074A1 (de) * 1976-11-29 1978-06-01 Plein Wagner Soehne Rauchgasleitung fuer einen waermeerzeuger mit einer absperrklappe
DE19603615A1 (de) * 1996-02-01 1997-08-07 Kutzner & Weber Gmbh Abgasabführsystem für gebäudeinstallierte Feuerstätten
DE19606403B4 (de) * 1996-02-21 2006-11-30 Centrotherm Systemtechnik Gmbh Anordnung zum Anschluß einer Verbrennungseinrichtung an ein Kaminrohr
DE10359551B4 (de) * 2003-12-17 2010-04-01 Skoberne Gmbh Rückstromsicherungsventil für Abgasanlagen

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2003036181A1 (fr) * 2001-10-26 2003-05-01 LK Luftqualität AG Dispositif de securite destine a l'air d'au moins un local d'un batiment
DE202006010099U1 (de) * 2005-01-31 2006-09-07 Vaillant Gmbh Vorrichtung zur Vermeidung von Abgasrückströmung beim Einsatz von Heizgeräten

Also Published As

Publication number Publication date
DE202007002662U1 (de) 2007-04-26
PL1962017T3 (pl) 2018-03-30
EP1962017A2 (fr) 2008-08-27
EP1962017A3 (fr) 2013-01-16

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