EP0076911B1 - Commande pour le mouvement d'un clapet d'air frais dans une chaudière - Google Patents

Commande pour le mouvement d'un clapet d'air frais dans une chaudière Download PDF

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Publication number
EP0076911B1
EP0076911B1 EP19820107619 EP82107619A EP0076911B1 EP 0076911 B1 EP0076911 B1 EP 0076911B1 EP 19820107619 EP19820107619 EP 19820107619 EP 82107619 A EP82107619 A EP 82107619A EP 0076911 B1 EP0076911 B1 EP 0076911B1
Authority
EP
European Patent Office
Prior art keywords
arm
swivel arm
actuating member
temperature
locking
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
EP19820107619
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German (de)
English (en)
Other versions
EP0076911A1 (fr
Inventor
Johann Holzinger
Franz Noneder
Karl Ackermann
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.)
Awina Industrieanlagen Handels- und Produktionsges
Original Assignee
Awina Ind Handels & Prod GmbH
Awina Industrieanlagen Handels- und Produktionsges Mbh
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 AT0376281A external-priority patent/AT386886B/de
Application filed by Awina Ind Handels & Prod GmbH, Awina Industrieanlagen Handels- und Produktionsges Mbh filed Critical Awina Ind Handels & Prod GmbH
Publication of EP0076911A1 publication Critical patent/EP0076911A1/fr
Application granted granted Critical
Publication of EP0076911B1 publication Critical patent/EP0076911B1/fr
Expired legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23N—REGULATING OR CONTROLLING COMBUSTION
    • F23N3/00—Regulating air supply or draught
    • F23N3/04—Regulating air supply or draught by operation of single valves or dampers by temperature sensitive elements
    • F23N3/047—Regulating air supply or draught by operation of single valves or dampers by temperature sensitive elements using mechanical means

Definitions

  • the invention relates to an arrangement for controlling the movement of a fresh air flap in boilers, which can be adjusted with the aid of an actuator of a temperature sensor designed as a firing controller as a function of the temperature inside the boiler and when the temperature in the boiler drops below a predeterminable value in the closed position is.
  • adjusting mechanisms are provided in the commercial heating boilers, which after heating up, when the normal firing process has been reached for the selected target temperature, close the fresh air flap and open again automatically when the boiler water temperature in the boiler drops.
  • a so-called firing controller which comprises a temperature sensor protruding into the boiler water with an interlocking located outside the boiler.
  • the measured temperature is transferred to a shaft, which is connected to the fresh air damper via a chain and which opens or closes depending on the rotational movement of the shaft and thus on the boiler water temperature.
  • This property of the combustion controller which ensures that the boiler maintains a constant temperature during normal heating operation, is disadvantageous if the temperature drops further, for example due to an interruption in the fuel supply. In this case, it is not desirable if the fresh air flap opens when the temperature drops, because as the train is strengthened, the residual energy of the embers is lost through the chimney, the interior of the boiler cools down and the hot water still present in the boiler also lowers its temperature significantly . This means accepting an undesirable loss of energy.
  • Devices for controlling the fresh air flap are already known, which are arranged between the fresh air flap and a combustion controller; (see DD-A-141 561, 143 946 and 148 813). None of the known arrangements shows a device that locks the connection between the fresh air flap and the combustion controller. Rather, the control devices only have to be switched on after the last introduction of fuel. The control system can therefore not function if, for example, one forgets to add fuel in good time and the control device is therefore not switched on.
  • the object of the invention is therefore to provide an arrangement for controlling the fresh air flap, which enables simple control, which is automatically in operation when the boiler is in operation, that is to say is adjustable from the start, and in particular controls the movement of the fresh air flap at the end of the combustion process.
  • a swivel arm is connected to the fresh air flap, the position of which can be locked relative to the actuating member of the firing controller, so that the swivel arm participates in the movement of the actuating member which is dependent on the temperature inside the boiler and that a device for solving the problem the lock is provided, which releases the coupling between the actuator and the swivel arm when the predetermined temperature in the boiler is reached, so that the swivel arm of the swivel arm relative to the actuator causes the fresh air flap to come into the closed position, preferably due to its own weight.
  • the invention is thus based on the consideration that after the heating process, to which the fresh air flap is opened by hand, after reaching the set temperature of the boiler water that can be set on the combustion controller, the regulation of the fresh air flap in a conventional manner as a function of the boiler water temperature only within a selectable temperature range should take place, which means that the fresh air flap opens when the temperature drops, opens less when the temperature rises and finally remains closed when the preselected target temperature is reached.
  • the fresh air flap will automatically come to a closed position when a pre-selectable minimum temperature is reached with the arrangement according to the invention without the control arrangement having to be brought into action by hand.
  • the arrangement shown in Fig. 1 to 3 has a combustion controller 1, which is screwed into a sleeve of a boiler 4 and comprises an arm 5 which rotates in accordance with an increasing or decreasing temperature in the boiler 4.
  • the combustion controller 1 can be a commercially available controller which is operated by means of a spring body filled with liquid. Axially to the pivot bearing 16 of the arm 5, a disk 7 is rotatably mounted, to which an actuating arm 9 is fastened with a screw and carries a chain 10 connected to a fresh air flap 3.
  • the fresh air flap 3 is actuated via the chain 10.
  • the fresh air damper 3 is closed during operation when the temperature rises and opened when the temperature falls to re-ignite the burning process. However, if the temperature drops to an adjustable minimum value, the fresh air flap 3 is closed with the arrangement according to the invention.
  • the arm 5 carries a locking part 6, which has the shape of a two-armed lever, which on the arm 5, for. B. is pivotally mounted by means of a screw 14.
  • One end of the latching part 6 comes into contact with a latch 8 provided on the disk 7, which is formed by a notch, by rotating the arm 5 when the temperature drops.
  • the chain 10 is tensioned and the fresh air flap 3 is opened when the arm 5 is rotated further. If the arm 5 continues to take the disk 7 with it, the fresh air flap 3 opens further. With continued pivoting of the arm 5 due to falling temperature, the second end of the latching part 6 then hits a stop 11.
  • the stop 11 presses against the end of the latching part 6 resting against it and guides the other End of the locking part 6 out of the notch 8 so that the disc 7 can rotate back under the weight of the actuating arm 9, the chain 10 and the fresh air flap 3 and the fresh air flap 3 is closed.
  • the boiler 4 is usually operated at a temperature of 85.degree. You can set the stop 11 so that at a temperature of about 65 ° C and if no other fuel is added, the locking part 6 is released by the stop 11 and the fresh air flap 3 is closed.
  • the stop 11 is turned away or adjusted so that the latching part 6 comes back into the notch 8 when the actuating arm 9 is raised, so that the arm 5 holds the disk 7 and the actuating arm 9 or the fresh air flap 3 .
  • the setting can be made either by a corresponding adjustment of the stop 11 or made on the basis of the various operating parameters of the boiler - the boiler 4 can be operated at any temperature exceeding 65 ° C.
  • the locking part 6 or the locking 8 can be designed differently. Instead of a notch 8, it is e.g. B. also possible to provide a laterally projecting pin from the disc against which a z. B. straight two-armed lever 6 can be applied.
  • the stop 11 can be attached to the combustion controller 1 via a linkage 17 or with a clamp or it can also be attached to the wall of the boiler 4. It is adjusted in one Plane perpendicular to the axis of rotation of arm 5 or disk 7.
  • the locking part 6 can be pressed with a spring 15 into a position in which it rests on the disk 7.
  • FIGS. 4 to 6 show a further embodiment of the control device shown in FIGS. 1 to 3.
  • This design of the control device is suitable for boilers in which it can be arranged either in the front wall or in the top cover of the boiler.
  • the parts which correspond to the parts shown in FIGS. 1 to 3 are identified by the same reference numerals.
  • the design differences lie in a simplification of the swivel arm, which here consists of a disk 7 connected to the actuating arm 9.
  • the stop 11 is formed by a rod which can be pivoted parallel to the pivot axis of the disk 7 and the end of which rests against a notch 6a provided in the latching part 6.
  • the control device shown in FIGS. 7 to 9 corresponds completely to the control device shown in FIGS. 4 to 6, only the stop 11 is bent in a U-shape at its end to be connected to the latching part 6. This modification is necessary if the control device is arranged on the side of a boiler.
  • a fresh air flap 102 is inserted into a boiler wall 101, shown in broken form in FIG. 10, which can be pivoted with the aid of a chain 103 about a pivot axis 104 into positions dependent on the temperature of the boiler water is.
  • the opening angle of the fresh air flap 102 is determined with the aid of a control device 105, to which the end of the chain remote from the fresh air flap 102 is connected.
  • the control device 105 comprises a firing controller 106 which is inserted into the boiler wall 101 and fastened there by means of a nut 107.
  • the so-called flow temperature of the boiler water is set on this combustion controller 106. As a rule, this is in a temperature range between 60 and 80 ° C.
  • the end of the combustion controller 106 protrudes into the boiler water and carries a temperature sensor.
  • the measured temperature of the boiler water is transferred to an actuator of the combustion controller 106 with the aid of a generally known mechanism that is not of interest here.
  • the actuator is designed here as a shaft 108 which, as can be seen from FIGS. 11 and 12, protrudes laterally from the part of the firing controller 106 located outside the boiler wall 101.
  • An actuating arm 109 is fixedly connected to the shaft 108 by means of a screw 110.
  • the actuating arm 109 projects radially outward from the shaft 108.
  • the rotary movements of the shaft 108 thus cause pivoting movements of the actuating arm 109 in a plane perpendicular to the shaft 108, which correspond exactly to the rotary movements of the shaft 108.
  • a pivot arm 111 is articulated, the pivot axis 112 of which runs parallel to the shaft 108, so that the pivoting movements of the pivot arm 111 take place in a plane which is parallel to the plane of movement of the actuating arm 109.
  • the free end of the swivel arm 111 is connected to the end of the chain 113 remote from the fresh air flap 102.
  • a locking bolt 113 is arranged on the swivel arm 111 and is designed as an angle lever which can be pivoted about an axis 114.
  • the angle lever 113 has the task of holding the pivot arm 111 with the actuating arm 109 in a locking or locking position in order to ensure that the pivot arm 111 moves together with the actuating arm 109 during a selectable temperature range and in this way that of the temperature sensor 103
  • the firing controller 106 triggers the rotary movement of the shaft 108 via the actuating arm 109 to the swivel arm 111 and from there via the chain 103 to the fresh air flap 102, with the aim that this is within the permissible fluctuation range of the temperature, which is generally between 15 and 18 ° C, depending on the temperature of the boiler water measured by the temperature sensor opens or closes.
  • the locking described between the swivel arm 111 and the actuating arm 109 is achieved with the aid of a lever arm 113a of the locking bolt 113 which, under the action of a tension spring 115 engaging at the end of its other lever arm 113b and connected to the swivel arm 111, simultaneously engages the actuating arm 109 and the swivel arm 111 that it overlaps the swivel arm 111 overlapping end 109a of the actuating arm 109.
  • the aid of the locking bolt 113 in the locking position it is prevented that the torque exerted on the swivel arm 111 by the weight of the fresh air flap 102 can trigger a swivel movement of the swivel arm 111.
  • the free end of the swivel arm 111 moves in dependence on the movement of the shaft 108 in a manner indicated by the double arrow, as a result of which ventilation control is achieved within the selected fluctuation range of the temperature, which differs from the conventional control solely by means of the usually built-in firing regulator , does not differ. That means with others Words, as soon as the firing process is completed and the temperature of the boiler water rises, the fresh air flap 102, which is initially opened for firing by hand, is closed further and further by a movement of the swivel arm 111 in the direction of arrow 116, so that only when the temperature falls within the permissible range Temperature fluctuation range to be opened again according to a rotation of the shaft 118.
  • control lever 117 In order to prevent the fresh air flap 102 from opening even further when the boiler water temperature falls below the permissible minimum temperature, which is lower than the lower temperature limit of the permitted temperature fluctuation range, and accelerate the burn-up of the embers bed that is still present through the increased supply of fresh air, there is a control lever 117 provided.
  • the control lever 117 is also designed as an angle lever and is pivotably mounted with its one lever arm 117a in a plate 123 connected to the firing controller 106 parallel to the boiler wall 101. Its other lever arm 117b carries a weight 118 at its free end.
  • a thread 119 is cut into the free end of the lever arm 117b, onto which the weight 118 provided with an internal thread 120 can be screwed in a selectable manner.
  • the pivoting movement of the control lever 117 takes place in a plane parallel to the planes in which the pivot arm 111 and the actuating arm 109 also move.
  • the lever 117 sinks onto the swivel arm 111, the weight 118 either sliding back and forth along the surface 113a of the locking bolt 113 when the shaft 108 rotates, or when the temperature reaches a sufficiently high level, it first contacts the lever 113a and finally slides along the surface of the pivot lever 111.
  • the fresh air flap 102 opens upward as a result of a pivoting movement of the pivoting lever 111 in the direction of arrow 116 until the end face of the locking bolt 113 abuts the free end of the weight 118 of the lever 117 sliding along the pivoting lever 111.
  • the shaft continues 108 in the direction of arrow 116 to continue to rotate above.
  • the swivel arm 111 is then prevented from moving further upward by the locking bolt 113a striking the weight 118 of the control lever 117.
  • control lever 117 counteracts a further movement of the pivot arm 111 and causes a pivoting movement of the locking bolt 113 about its axis 114 in the direction of arrow 121 as soon as the force exerted by the control lever 117 on the locking bolt 113 exceeds the tensile force of the spring 115.
  • the latter can yield to the torque exerted on it by the fresh air flap 102 and decouple from the actuating arm 109 in order to turn the axis 112 downward in the direction of the arrow 116.
  • the end face rounded at the free end of the adjusting arm 109 facilitates the swiveling movement of the locking bolt 113 along the end face of the adjusting arm 109.
  • the control device 105 After unlocking the locking bolt 113, the control device 105 assumes the position shown in FIG. 13, in which the fresh air flap 102 is completely closed and also remains until it is again manually, e.g. B. is brought into the open position when the boiler is fired again. The control device 105 also returns to the position shown in FIG. 10 with the locking bolt 113 locked.
  • the occurrence of the unlocking of the pivot lever 111 at a temperature below the selected, adjustable temperature range can also be varied by changing the length of the arm 117b of the control lever 117. This is e.g. B. possible by screwing the weight 118 in or out on the thread 119 of the arm 117b.
  • the pivoting movement of the control lever 117 is indicated by the arrow 122.
  • the permissible temperature fluctuation range will be 15 to 18 ° C.
  • the temperature at which the fresh air flap 102 should close and also remain in the closed position would then be approximately 42 to 45 ° C at a flow temperature of 60 ° C, while in the temperature range of 45 to 60 ° C the fresh air flap 102 in a conventional manner in accordance with the Position of shaft 108 closes when the temperature rises and opens when the temperature falls.
  • control device In addition to the described use of the control device, it can also be used for actuating further ventilation flaps. Here is the ventilation of greenhouses and other rooms. In such cases, the temperature sensor can be controlled from the outside temperature.

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Air Supply (AREA)
  • Control Of Combustion (AREA)

Claims (15)

1. Disposition pour la commande du mouvement du volet à air frais dans les chaudières de chauffage, qui est réglable à l'aide d'un organe d'actionnement d'un capteur de température conçu sous forme de régulateur de foyer, sous la dépendance de la température à l'intérieur de la chaudière de chauffage et peut être amené à la position de fermeture en cas d'abaissement de la température dans la chaudière de chauffage en dessous d'une valeur qui peut être prédéterminée, caractérisée en ce qu'au volet à air frais (3, 102) est relié un bras pivotant (7, 9, 111) dont la position relativement à l'organe d'actionnement (5, 108) du régulateur de foyer (1, 106) peut être arrêtée, de sorte que le bras pivotant (7, 9, 111) participe au mouvement de l'organe d'actionnement (5, 108), dépendant de la température à l'intérieur de la chaudière de chauffage, et en ce qu'en outre, il est prévu un dispositif (11, 117) servant à libérer l'arrêt, qui, lorsque la température pouvant être prédéterminée est atteinte dans la chaudière de chauffage, libère l'accouplement entre l'organe d'actionnement (5, 108) et le bras pivotant (7, 9, 111) de sorte que par un mouvement de pivotement du bras pivotant (7, 9, 111) relativement à l'organe d'actionnement (5, 108), le volet à air frais (3, 102) arrive, de préférence en vertu de son propre poids, à la position de fermeture.
2. Disposition selon la revendication 1, caractérisée en ce que l'organe d'actionnement du régulateur de foyer (1), conçu sous forme de bras de réglage (5), porte un élément d'arrêt (6) qui peut être arrêté avec un arrêt (8) porté par une partie du bras pivotant (7) pour la transmission du mouvement du bras de réglage (5) au bras pivotant (7).
3. Disposition selon la revendication 2, caractérisée en ce que l'élément d'arrêt (6) est formé par un levier à deux bras (6) monté de manière à pouvoir pivoter à l'extrémité du bras de réglage (5) et dont une extrémité peut s'arrêter dans l'arrêt (8) prévu sur le bras pivotant (7, 9) et dont l'autre extrémité arrive, lors d'un pivotement du bras de réglage (5), contre le dispositif de libération de l'arrêt, conçu sous forme de butée (11), l'élément d'arrêt (6) pouvant être amené hors de l'arrêt (8) par la butée (11) lors du mouvement poursuivi du bras de réglage (5), et en ce que le bras pivotant (7, 9) peut pivoter relativement au bras de réglage (5).
4. Disposition selon l'une des revendications précédentes, caractérisée en ce que le bras pivotant (7, 9) comprend un disque (7) dans lequel l'arrêt (8) est constitué sous forme d'encoche (8).
5. Disposition selon l'une des revendications précédentes, caractérisée en ce que le disque (7) est relié à un bras d'actionnement (9) qui est relié au volet à air frais (3) par l'intermédiaire d'un organe de liaison (10) (chaîne ou tringlage).
6. Disposition selon l'une des revendications précédentes, caractérisée en ce que la butée (11) est réglable.
7. Disposition selon l'une des revendications précédentes, caractérisée en ce que la butée (11) peut pivoter autour d'un axe dirigé parallèlement à l'axe du bras pivotant (7, 9).
8. Disposition selon l'une des revendications précédentes, caractérisée en ce que le bras pivotant (7, 9) est monté de façon mobile en rotation sur ou dans un axe (12) du régulateur de foyer (1), portant le bras de réglage (5).
9. Disposition selon la revendication 1, caractérisée en ce qu'il est prévu un bras pivotant (111) dépassant radialement vers l'extérieur par rapport à un organe de réglage monté de façon pivotante (108, 109) du régulateur de foyer, bras dont la position relativement à l'organe de réglage (108, 109) peut être arrêtée dans le cadre de l'intervalle de température pouvant être choisi, de sorte qu'il participe au mouvement de l'organe de réglage (108) et le transmet au volet à air frais (102), et dont l'arrêt peut être libéré à la température qui peut être prédéterminée, pour permettre, par un mouvement de pivotement du bras pivotant (111) relativement à l'organe de réglage (108, 109), une position de fermeture du volet à air frais (102) qui est indépendante de la position de l'organe de réglage (108, 109) du régulateur de foyer (106).
10. Disposition selon la revendication 9, caractérisée en ce que l'organe de réglage (108, 109) du régulateur de foyer (106) est conçu sous la forme d'un arbre (108) muni d'un bras de réglage (109) dépassant radialement vers l'extérieur.
11. Disposition selon l'une des revendications 9 et 10, caractérisée en ce que le bras pivotant (111), dans sa position d'arrêt, est aligné sur le bras de réglage (109) et, après libération de l'arrêt, peut pivoter relativement à ce bras.
12. Disposition selon l'une des revendications 9 à 11, caractérisée en ce que pour l'arrêt du bras pivotant (111) est prévu un verrou de blocage (113) conçu sous forme de levier coudé, qui, dans la position d'arrêt du bras pivotant (111), s'applique par l'un de ses bras (113a) contre le bras de réglage (109) pour former une butée et est retenu dans cette position à l'aide d'un dispositif de traction (115) s'appliquant à son autre bras.
13. Disposition selon l'une des revendications 9 à 12, caractérisée en ce que pour la libération de l'arrêt du bras pivotant (111) est prévu un levier de commande (117) pouvant pivoter librement relativement à l'organe de réglage (108, 109) du régulateur de foyer (106) et qui, pendant un mouvement de l'organe de réglage (108, 109) s'effectuant dans le cadre de l'intervalle de température pouvant être choisi, glisse par l'une de ses extrémités le long du bras de réglage (109), et, à la température pouvant être prédéterminée, située en dessous de l'intervalle de température mentionné, assure un mouvement de pivotement du verrou de blocage (113) dans le sens d'une libération de l'arrêt entre le bras de réglage (109) et le bras pivotant (111), de sorte qu'un mouvement de pivotement du bras pivotant (111) relativement au bras de réglage (109) provoque une position de fermeture constante du volet d'aération (102), qui est indépendante de la position de l'organe de réglage (108, 109) du régulateur de foyer (106).
14. Disposition selon la revendication 13, caractérisée en ce que le levier de commande (117) repose sur le bras de réglage (109) par suite de sa force de gravité, en combinaison avec un poids (118) prévu à son extrémité libre.
15. Disposition selon la revendication 13, caractérisée en ce qu'un bras (117b) du levier de commande, servant à l'appui sur le bras de réglage (109), est de longueur variable.
EP19820107619 1981-08-31 1982-08-20 Commande pour le mouvement d'un clapet d'air frais dans une chaudière Expired EP0076911B1 (fr)

Applications Claiming Priority (6)

Application Number Priority Date Filing Date Title
AT0376281A AT386886B (de) 1981-08-31 1981-08-31 Anordnung zur steuerung einer zugluftklappe bei heizkesseln
AT3762/81 1981-08-31
DE3201900 1982-01-22
DE3201900 1982-01-22
DE19823224629 DE3224629A1 (de) 1981-08-31 1982-07-01 Steuerung fuer die bewegung einer frischluftklappe bei heizkesseln
DE3224629 1982-07-01

Publications (2)

Publication Number Publication Date
EP0076911A1 EP0076911A1 (fr) 1983-04-20
EP0076911B1 true EP0076911B1 (fr) 1986-05-07

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EP19820107619 Expired EP0076911B1 (fr) 1981-08-31 1982-08-20 Commande pour le mouvement d'un clapet d'air frais dans une chaudière

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Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3513881A1 (de) * 1985-04-17 1986-10-23 "HDG" Entwicklungs- und Patentverwertungsgesellschaft mbH, Wald, Steiermark Zusatzeinrichtung zur frischluftregulierung fuer heizkessel
WO2004072553A1 (fr) * 2003-02-14 2004-08-26 Fpi Fireplace Products International Ltd. Systeme et procede de regulation de tirage pour systemes de chauffage

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH204489A (de) * 1938-03-21 1939-05-15 Muehlethaler Waldvogel Ewald Vorrichtung zum Anzeigen von Störungen an Feuerungen.
DD141561A1 (de) * 1979-02-01 1980-05-07 Peter Krampe Verfahren und anordnung zur ueberwachung von heizkesseln,insbesondere braunkohlenbrikettheizkesseln
DD143946A1 (de) * 1979-02-01 1980-09-17 Peter Krampe Verfahren und vorrichtung zur ueberwachung von heizkesseln,insbesondere braunkohlenbrikettheizkesseln
DD148813A1 (de) * 1980-01-25 1981-06-10 Udo Becher Anordnung zur regelung der sekundaerluftzufuhr fuer feststoffrostfeuerungen

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