EP0479216B1 - Heating device - Google Patents
Heating device Download PDFInfo
- Publication number
- EP0479216B1 EP0479216B1 EP91116718A EP91116718A EP0479216B1 EP 0479216 B1 EP0479216 B1 EP 0479216B1 EP 91116718 A EP91116718 A EP 91116718A EP 91116718 A EP91116718 A EP 91116718A EP 0479216 B1 EP0479216 B1 EP 0479216B1
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- EP
- European Patent Office
- Prior art keywords
- gas
- gas supply
- supply tube
- sensing
- heating appliance
- 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
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23D—BURNERS
- F23D14/00—Burners for combustion of a gas, e.g. of a gas stored under pressure as a liquid
- F23D14/46—Details, e.g. noise reduction means
- F23D14/62—Mixing devices; Mixing tubes
- F23D14/64—Mixing devices; Mixing tubes with injectors
Definitions
- the invention relates to a heating device with a burner with a gas mixture formation tube, which has a gas supply tube provided with a gas nozzle, which projects into the gas mixture formation tube through an air inlet thereof and in which a pressure measuring point for detecting the mixture pressure is arranged, which is connected via a measuring tube a gas valve is connected.
- the aim of the invention is to avoid these disadvantages and to propose a heating device of the type mentioned at the outset which is distinguished by a simple structure.
- the measuring channel is arranged on the gas supply pipe or is integrated into the latter and runs parallel to it.
- the measuring channel ends in the region of the end face of the gas nozzle.
- a diaphragm which more or less opens the air inlet is held axially displaceably.
- Another object of the invention is to design a heating device according to the invention in such a way that only a small assembly effort is required for its assembly. In addition, sufficiency should be found with a minimum of seals.
- connection plate makes it possible to pre-assemble the connection plate during manufacture and to connect the corresponding lines to the connection plate already in the course of production, so that the lines only have to be fitted accordingly with their second ends during assembly.
- proposed measures also make it possible to assemble the gas fitting very easily and, if necessary, to dismantle it again, since it is only necessary to separate the gas fitting from the connection plate and fasten it again.
- connection head is arranged on the side of the connection plate opposite the gas fitting, in which the gas inlet, the channel leading to the gas supply pipe and the channels leading to the various pressure measuring points are incorporated.
- connection points for the individual lines can be made very accessible.
- various channels that transmit the pressures at different measuring points directly into the connection head.
- the channel transmitting the pressure of the inflowing gas can be branched off directly from the gas inlet.
- the same also applies to a channel transmitting the pressure in a channel leading to the gas supply pipe.
- the measuring channel is arranged essentially centrally in the gas supply pipe and is preferably held axially adjustable.
- the adjustable mounting of the measuring tube also enables adaptation to the respective conditions.
- At least one gas mixture formation tube 2 is arranged in a vacuum chamber 1, in the wall of which a temperature sensor 3 is arranged, with which the temperature of the mixture located in the gas mixture formation tube 2 can be detected.
- the end wall 5 of the gas mixture formation tube 2 opposite the wall 4 of the vacuum chamber 1 is provided with an air inlet 12 which is penetrated by a gas feed tube 6 with considerable play, so that an annular air inlet 12 remains.
- a measuring channel 7 is arranged on the gas feed pipe 6 in its lower region, which is connected to the gas feed pipe 6 and runs parallel to the latter.
- This measuring channel 7 is formed by a tube which is connected to the gas supply tube 6 along jacket lines and bears against its outer jacket surface along a jacket line.
- This tube forming the measuring channel 7 leads via a connection head 8 to a connection plate 9, on the side of which is remote from the connection head 8, a gas fitting 10 is arranged.
- an aperture 11 is held so as to be displaceable in the axial direction in order to open the air inlet 12 to a greater or lesser extent.
- the orifice 11 is adjustable by means of a motor 13 which can be controlled as a function of the temperature of the mixture in the gas mixture formation tube 2, which temperature is measured by means of the temperature sensor 3.
- connection head 8 tightly covers an opening 14 of the wall 4 of the vacuum chamber 1, a channel 15 being incorporated in the connection head 8, via which the pressure in the vacuum chamber 1 is supplied to the gas valve 10.
- the gas supply pipe 6 connects a gas channel 16 incorporated in the connection head 8 to the gas mixture formation pipe 2, the gas supply pipe ending in a nozzle 17 from which the gas jet flows into the gas mixture formation pipe 2 and mixes with the air which flows in via the air inlet 12.
- the air is supplied by a speed-controlled fan, not shown.
- a preferably electrically operated heat exchanger or gas heater 18 is arranged in the gas channel 16, which makes it possible to heat the gas to a corresponding temperature of, for example, 80 ° C. or to heat it to a value which corresponds to the temperature to which the temperature sensor 3 responds to ensure the consistency of the mixture as far as possible in every operating state of the burner.
- the nozzle pressure is removed in the gas channel 16 via a pressure channel 19 arranged in the connection head 8 and fed to the gas valve 10, which also the mixture pressure via the measuring channel 7 is supplied, which sets in the gas mixture formation tube 2.
- the gas valve is also the gas pressure, which is removed from the gas inlet 20, which also leads to the gas valve 10, and supplied via a further pressure channel 21 arranged in the connection head 8.
- connection plate 9 is fastened to one side of the connection plate 9 and to the other side of the connection plate 9 the connection head 8, into which the lines leading to the vacuum chamber 1 and the gas connection open, which makes it very simple Montage results.
- a seal 25 is interposed between the connection plate 9, which is provided with corresponding channels and passages, and the connection head 8. These channels and passages of the connection plate 9 are aligned with the channels 15, 16, 19, 7, 21 and 20, which are arranged in the connection head 8.
- the embodiment of Figure 2 differs from that of Figure 1 in that the measuring channel 7 'is arranged centrally in the gas supply pipe 6.
- the measuring channel 7 ' is held in an adjustable receptacle 27 with which the measuring channel 7' axially is adjustable. This enables adaptation to the respective flow conditions.
- FIG. 3 shows a detail of a further exemplary embodiment of the invention, by means of which the direct transmission of the structure-borne noise caused by a blower (not shown) to the heating device is prevented.
- the embodiment shown in FIG. 3 with integrated differential pressure absorption in the mixture formation tube 2, to which the blower (not shown) is connected on the suction side, allows a tolerance range for the setting of the gas feed tube 6 without different values arising after service work.
- the diaphragm 11 is set at a fixed distance from the inlet of the mixture formation tube 2 by means of screws and spacer elements 24 which are adjustably held thereon and which can be formed, for example, by nuts or also springs, in particular compression springs rigidly connected.
- This distance can be set after the corresponding data have been determined by experiment, and this value can be varied depending on the desired device power and the necessary minimum effective pressure over the orifice 11 with a minimum device power.
- the aperture 11 is provided with an elastomer ring 28, which seals the gap between a metallic aperture ring 27 and the gas supply pipe 6 that is necessary in terms of production technology and facilitates displacement of the aperture 11 during service, the aperture 11 being sealed by the metallic aperture ring 27 and the elastomer ring 28 is formed.
- the elastomer ring 28 is provided with a circumferential groove 29 on its outer circumferential surface, in which the metallic diaphragm ring 27 engages.
- the bore of the elastomer ring, which is penetrated by the gas supply pipe 6, has a diameter that is smaller than the outer diameter of the gas supply pipe 6.
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Regulation And Control Of Combustion (AREA)
- Measuring Fluid Pressure (AREA)
- Resistance Heating (AREA)
- Yarns And Mechanical Finishing Of Yarns Or Ropes (AREA)
- Baking, Grill, Roasting (AREA)
- Feeding And Controlling Fuel (AREA)
Abstract
Description
Die Erfindung bezieht sich auf eine Heizeinrichtung mit einem Brenner mit einem Gasgemischbildungsrohr, das ein mit einer Gasdüse versehenes Gaszuführrohr aufweist, das in das Gasgemischbildungsrohr durch einen Lufteinlaß desselben hindurch hineinragt und in dem eine Druckmeßstelle zur Erfassung des Gemischdruckes angeordnet ist, die über ein Meßrohr mit einer Gasarmatur verbunden ist.The invention relates to a heating device with a burner with a gas mixture formation tube, which has a gas supply tube provided with a gas nozzle, which projects into the gas mixture formation tube through an air inlet thereof and in which a pressure measuring point for detecting the mixture pressure is arranged, which is connected via a measuring tube a gas valve is connected.
Bei solchen Heizeinrichtungen (siehe z.B., DE-B-1113532) ist es für die Regelung der Gaszufuhr wesentlich, den Gemischdruck im Gasgemischbildungsrohr zu erfassen. Dazu ist bei den bekannten derartigen Heizeinrichtungen ein separates Meßrohr vorgesehen, das durch eine separate Bohrung des Gasgemischbildungsrohres hindurchgeführt und gehalten werden muß. Dies erfordert entsprechende konstruktive Maßnahmen.With such heating devices (see e.g. DE-B-1113532) it is essential for the control of the gas supply to record the mixture pressure in the gas mixture formation tube. For this purpose, a separate measuring tube is provided in the known heating devices of this type, which has to be guided and held through a separate bore in the gas mixture formation tube. This requires appropriate constructive measures.
Ziel der Erfindung ist es, diese Nachteile zu vermeiden und eine Heizeinrichtung der eingangs erwähnten Art vorzuschlagen, die sich durch einen einfachen Aufbau auszeichnet.The aim of the invention is to avoid these disadvantages and to propose a heating device of the type mentioned at the outset which is distinguished by a simple structure.
Erfindungsgemäß wird dies dadurch erreicht, daß der Meßkanal an dem Gaszuführrohr angeordnet beziehungsweise in dieses integriert ist und parallel zu diesem verläuft.According to the invention, this is achieved in that the measuring channel is arranged on the gas supply pipe or is integrated into the latter and runs parallel to it.
Auf diese Weise erübrigt sich eine separate Durchführung für das Meßrohr und eine Halterung für dasselbe vorzusehen, wie dies bei den bekannten Lösungen erforderlich ist.In this way, it is not necessary to provide a separate bushing for the measuring tube and a holder for the same, as is required in the known solutions.
Dabei kann nach einem weiteren Merkmal der Erfindung vorgesehen sein, daß der Meßkanal im Bereich der Stirnseite der Gasdüse endet.According to a further feature of the invention, it can be provided that the measuring channel ends in the region of the end face of the gas nozzle.
Auf diese Weise ist sichergestellt, daß sich der Meßpunkt der Druckmessung immer an der selben Stelle befindet und sich eine separate Einstellung des Meßkanales erübrigt.In this way it is ensured that the measuring point of the pressure measurement is always in the same place and that a separate adjustment of the measuring channel is not necessary.
Weiter kann vorgesehen sein, daß auf dem mit dem Meßkanal versehenen Gaszuführrohr eine den Lufteinlaß mehr oder weniger weit freigebende Blende axial verschiebbar gehalten ist.Furthermore, it can be provided that on the gas supply pipe provided with the measuring channel a diaphragm which more or less opens the air inlet is held axially displaceably.
Durch diese Maßnahmen ergibt sich der Vorteil einer sehr einfachen Regelung der Luftzufuhr, wobei die Verstellung der Blende auch über ein Stellglied in Abhängigkeit von der Belastung des Brenners beziehungsweise dessen Temperatur erfolgen kann.These measures result in the advantage of a very simple regulation of the air supply, the orifice plate also being able to be adjusted via an actuator depending on the load on the burner or its temperature.
Ein weiteres Ziel der Erfindung ist es, eine erfindungsgemäße Heizeinrichtung in konstruktiver Hinsicht so zu gestalten, daß zu seiner Montage nur ein geringer Montageaufwand erforderlich ist. Außerdem soll auch mit einem Minimum an Dichtungen das Auslangen gefunden werden.Another object of the invention is to design a heating device according to the invention in such a way that only a small assembly effort is required for its assembly. In addition, sufficiency should be found with a minimum of seals.
Erfindungsgemäß wird dies dadurch erreicht, daß die Gasarmatur an einer Seite einer Anschlußplatte angeordnet ist, an deren gegenüberliegender Seite der Gaseinlaß, ein zum Gaszuführrohr führender Kanal und die zu verschiedenen Druckmeßpunkten führenden Kanäle angeschlossen sind.According to the invention this is achieved in that the gas valve is arranged on one side of a connection plate, on the opposite side Side of the gas inlet, a channel leading to the gas supply pipe and the channels leading to various pressure measuring points are connected.
Durch diese Maßnahmen ist es möglich, die Anschlußplatte bereits bei der Herstellung vorzumontieren und die entsprechenden Leitungen an der Anschlußplatte bereits im Zuge der Fertigung anzuschließen, so daß die Leitungen bei der Montage nur mehr mit ihren zweiten Enden entsprechend montiert werden müssen. Außerdem ist es durch die vorgeschlagenen Maßnahmen auch möglich, die Gasarmatur sehr einfach zu montieren und im Bedarfsfall auch wieder zu demontieren, da es dazu lediglich erforderlich ist, die Gasarmatur von der Anschlußplatte zu trennen und wieder an dieser zu befestigen.These measures make it possible to pre-assemble the connection plate during manufacture and to connect the corresponding lines to the connection plate already in the course of production, so that the lines only have to be fitted accordingly with their second ends during assembly. In addition, the proposed measures also make it possible to assemble the gas fitting very easily and, if necessary, to dismantle it again, since it is only necessary to separate the gas fitting from the connection plate and fasten it again.
Da in aller Regel die Anschlußleitungen kaum einer Wartung bedürfen, ergeben sich bei Wartungsarbeiten an der Gasarmatur sehr erhebliche Einsparungen an Montagearbeiten gegenüber den herkömmlichen Lösungen.Since, as a rule, the connecting lines hardly require any maintenance, very considerable savings are made in assembly work when compared to conventional solutions.
Nach einem weiteren Merkmal der Erfindung kann vorgesehen sein, daß an der der Gasarmatur gegenüberliegenden Seite der Anschlußplatte ein Anschlußkopf angeordnet ist, in dem der Gaseinlaß, der zum Gaszuführrohr führende Kanal und die zu den verschiedenen Druckmeßpunkten führenden Kanäle eingearbeitet sind.According to a further feature of the invention, it can be provided that a connection head is arranged on the side of the connection plate opposite the gas fitting, in which the gas inlet, the channel leading to the gas supply pipe and the channels leading to the various pressure measuring points are incorporated.
Durch diese Maßnahmen ergibt sich der Vorteil, daß die Anschlußstellen für die einzelnen Leitungen sehr gut zugänglich gestaltet werden können. Außerdem ergibt sich auch die Möglichkeit, verschiedene, die Drücke an verschiedenen Meßpunkten übertragende Kanäle direkt in den Anschlußkopf einzuarbeiten. Dabei kann zum Beispiel der den Druck des zuströmenden Gases übertragende Kanal direkt vom Gaseinlaß abgezweigt werden. Gleiches gilt auch für einen den Druck in einem zum Gaszuführrohr führenden Kanal übertragenden Kanal. Weiter ergibt sich dabei auch die Möglichkeit, einen Kanal zur Übertragung des Druckes in einer Unterdruckkammer der Heizeinrichtung vorzusehen, der einfach in einem Bereich des Anschlußkopfes endet, der eine Öffnung der Unterdruckkammer überdeckt. Dadurch ergibt sich eine weitere Verminderung der Montagearbeiten.These measures have the advantage that the connection points for the individual lines can be made very accessible. There is also the possibility incorporate various channels that transmit the pressures at different measuring points directly into the connection head. For example, the channel transmitting the pressure of the inflowing gas can be branched off directly from the gas inlet. The same also applies to a channel transmitting the pressure in a channel leading to the gas supply pipe. Furthermore, there is also the possibility of providing a channel for transmitting the pressure in a vacuum chamber of the heating device, which simply ends in a region of the connection head which covers an opening of the vacuum chamber. This results in a further reduction in assembly work.
Nach einem weiteren Merkmal der Erfindung kann vorgesehen sein, daß der Meßkanal im wesentlichen zentral im Gaszuführrohr angeordnet und vorzugsweise axial verstellbar gehalten ist.According to a further feature of the invention, it can be provided that the measuring channel is arranged essentially centrally in the gas supply pipe and is preferably held axially adjustable.
Auf diese Weise ergibt sich ein sehr einfacher Aufbau der Einrichtung, wobei sich die einzelnen Teile sehr einfach herstellen lassen. Außerdem ist durch die verstellbare Halterung des Meßrohres auch eine Anpassung an die jeweiligen Verhältnisse möglich.This results in a very simple construction of the device, the individual parts being very easy to manufacture. In addition, the adjustable mounting of the measuring tube also enables adaptation to the respective conditions.
Die Erfindung wird anhand der Zeichnung näher erläutert.The invention is explained in more detail with reference to the drawing.
Dabei zeigen:
Figur 1 ein erstes Ausführungsbeispiel einer erfindungsgemäßen Heizeinrichtung undFigur 2 ein Detail eines weiteren Ausführungsbeispieles einer Heizeinrichtung undFigur 3 ein Detail eines weiteren Ausführungsbeispieles einer Heizeinrichtung.
- Figure 1 shows a first embodiment of a heating device according to the invention and
- Figure 2 shows a detail of a further embodiment of a heating device and
- Figure 3 shows a detail of another embodiment of a heating device.
Bei der Ausführungsform nach der Figur 1 ist in einer Unterdruckkammer 1 mindestens ein Gasgemischbildungsrohr 2 angeordnet, in dessen Wand ein Temperaturfühler 3 angeordnet ist, mit dem die Temperatur des sich in dem Gasgemischbildungsrohr 2 befindlichen Gemisches erfaßbar ist.In the embodiment according to FIG. 1, at least one gas
Die der Wand 4 der Unterdruckkammer 1 gegenüberliegende Stirnwand 5 des Gasgemischbildungsrohres 2 ist mit einem Lufteinlaß 12 versehen, der von einem Gaszuführrohr 6 mit erheblichem Spiel durchsetzt ist, so daß ein ringförmiger Lufteinlaß 12 verbleibt.The
An dem Gaszuführrohr 6 ist in dessen unterem Bereich ein Meßkanal 7 angeordnet, der mit dem Gaszuführrohr 6 verbunden ist und parallel zu diesem verläuft. Dieser Meßkanal 7 ist durch ein Rohr gebildet, das entlang von Mantellinien mit dem Gaszuführrohr 6 verbunden ist und an dessen äußerer Mantelfläche entlang einer Mantellinie anliegt. Dieses den Meßkanal 7 bildende Rohr führt über einen Anschlußkopf 8 zu einer Anschlußplatte 9, an deren dem Anschlußkopf 8 abgewandten Seite eine Gasarmatur 10 angeordnet ist.A
Auf dem Gaszuführrohr 6 ist eine Blende 11 in axialer Richtung verschiebbar gehalten, um den Lufteinlaß 12 mehr oder weniger weit freizugeben. Dabei ist die Blende 11 mittels eines Motors 13 verstellbar, der in Abhängigkeit von der mittels des Temperaturfühlers 3 erfaßten Temperatur des Gemisches im Gasgemischbildungsrohr 2 ansteuerbar ist.On the
Der Anschlußkopf 8 deckt eine Öffnung 14 der Wand 4 der Unterdruckkammer 1 dicht ab, wobei im Anschlußkopf 8 ein Kanal 15 eingearbeitet ist, über den der Druck in der Unterdruckkammer 1 der Gasarmatur 10 zugeleitet wird.The
Das Gaszuführrohr 6 verbindet einen im Anschlußkopf 8 eingearbeiteten Gaskanal 16 mit dem Gasgemischbildungsrohr 2, wobei das Gaszuführrohr in einer Düse 17 endet, aus der der Gasstrahl in das Gasgemischbildungsrohr 2 einströmt und sich mit der Luft vermischt, die über den Lufteinlaß 12 einströmt. Dabei wird die Luft von einem nicht dargestellten drehzahlgesteuerten Gebläse zugeführt. In dem Gaskanal 16 ist ein vorzugsweise elektrisch betriebener Wärmetauscher beziehungsweise Gaserhitzer 18 angeordnet, der es ermöglicht, das Gas auf eine entsprechende Temperatur von zum Beispiel 80 °C zu erhitzen beziehungsweise auf einen Wert aufzuheizen, der jener Temperatur entspricht, auf die der Temperaturfühler 3 anspricht, um eine weitgehende Konstanz des Gemisches bei jedem Betriebszustand des Brenners sicherzustellen.The
Weiter wird im Gaskanal 16 über einen im Anschlußkopf 8 angeordneten Druckkanal 19 der Düsendruck abgenommen und der Gasarmatur 10 zugeführt, der über den Meßkanal 7 auch der Gemischdruck zugeführt wird, der sich im Gasgemischbildungsrohr 2 einstellt.Furthermore, the nozzle pressure is removed in the
Weiter wird der Gasarmatur auch noch der Gasdruck, der vom Gaseinlaß 20, der auch zur Gasarmatur 10 führt, abgenommen und über einen im Anschlußkopf 8 angeordneten weiteren Druckkanal 21 zugeführt.Furthermore, the gas valve is also the gas pressure, which is removed from the
Diese Drücke werden dem Gasdruckregler 22 der Gasarmatur 10 zugeführt, die weiter zwei Magnetventile 23, 23′ aufweist, die den Gasstrom steuern. Dabei ist noch ein Gasdruckwächter 24 vorgesehen.These pressures are supplied to the
Wie aus der Zeichnung zu ersehen ist, ist an der einen Seite der Anschlußplatte 9 die Gasarmatur 10 befestigt und an der anderen Seite der Anschlußplatte 9 der Anschlußkopf 8, in den die zur Unterdruckkammer 1 führenden Leitungen und der Gasanschluß münden, wodurch sich eine sehr einfache Montage ergibt. Dabei ist zwischen der Anschlußplatte 9, die mit entsprechenden Kanälen und Durchlässen versehen ist, und dem Anschlußkopf 8 eine Dichtung 25 zwischengelegt. Diese Kanäle und Durchlässe der Anschlußplatte 9 fluchten mit den Kanälen 15, 16, 19, 7, 21 und 20, die im Anschlußkopf 8 angeordnet sind.As can be seen from the drawing, the
Die Ausführungsform nach der Figur 2 unterscheidet sich von jener nach der Figur 1 dadurch, daß der Meßkanal 7′ zentral im Gaszuführrohr 6 angeordnet ist. Dabei ist der Meßkanal 7′ in einer verstellbaren Aufnahme 27 gehalten, mit der der Meßkanal 7′ axial verstellbar ist. Dies ermöglicht eine Anpassung an die jeweiligen Strömungsverhältnisse.The embodiment of Figure 2 differs from that of Figure 1 in that the measuring channel 7 'is arranged centrally in the
Die Figur 3 zeigt ein Detail eines weiteren Ausführungsbeispieles der Erfindung, durch das die direkte Übertragung des durch ein nicht dargestelltes Gebläse bedingten Körperschalles auf die Heizeinrichtung verhindert wird. Auch erlaubt die in der Figur 3 dargestellte Ausführungsform mit integrierter Wirkdruckaufnahme im Gemischbildungsrohr 2, an dem das nicht dargestellte Gebläse saugseitig angeschlossen ist, ein Toleranzfeld der Einstellung des Gaszuführrohres 6, ohne daß unterschiedliche Werte nach Servicearbeiten entstehen.FIG. 3 shows a detail of a further exemplary embodiment of the invention, by means of which the direct transmission of the structure-borne noise caused by a blower (not shown) to the heating device is prevented. The embodiment shown in FIG. 3 with integrated differential pressure absorption in the
Die Blende 11 ist bei der Ausführungsform nach der Figur 3 auf einen festen Abstand vom Einlaß des Gemischbildungsrohres 2 mittels Schrauben und auf diesen verstellbar gehaltenen Distanzelementen 24 , die zum Beispiel durch Muttern oder auch Federn, insbesondere Druckfedern, gebildet sein können, eingestellt und mit diesem starr verbunden. Dieser Abstand kann nach versuchstechnischer Ermittlung der entsprechenden Daten eingestellt werden, wobei dieser Wert je nach der gewünschten Geräteleistung und dem notwendigen minimalen Wirkdruck über der Blende 11 bei minimaler Geräteleistung variiert werden kann. Grundsätzlich ist auch bei der Ausführungsform nach der Figur 3 ein Einsatz einer verschiebbar gehaltenen über ein Stellglied gesteuerten Blende möglich.In the embodiment according to FIG. 3, the
Um eine direkte Körperschalleitung vom nicht dargestellten Gebläse auf die Heizeinrichtung zu unterbinden und trotzdem eine genaue Einstellung der Blende 11 zu ermöglichen, ist die Blende 11 mit einem Elastomerring 28 versehen, der den fertigungstechnisch erforderlichen und ein Verschieben der Blende 11 beim Service erleichternden Spalt zwischen einem metallischen Blendenring 27 und dem Gaszuführrohr 6 abdichtet, wobei die Blende 11 durch den metallischen Blendenring 27 und den Elastomerring 28 gebildet ist. Dabei ist der Elastomerring 28 mit einer an seiner äußeren Mantelfläche umlaufenden Nut 29 versehen, in die der metallische Blendenring 27 eingreift. Dabei weist die Bohrung des Elastomerringes, die vom Gaszuführrohr 6 durchsetzt ist, einen Durchmesser auf, der kleiner als der Außendurchmesser des Gaszuführrohres 6 ist.In order to prevent a direct body form line from the blower (not shown) to the heating device and still an exact one To enable adjustment of the
Claims (7)
- A heating appliance comprising a burner having a gas mixture-forming tube (2), which is provided with a gas supply tube (6), which is provided with a gas nozzle (17) and protrudes into the gas mixture-forming tube (2) through an air inlet (12) thereof, and wherein said gas supply tube contains a pressure_sensing location for sensing the pressure of the mixture, which location is connected by a sensing duct (7) to a gas controller (10), charactaized in that the sensing duct (7) is provided on or integrated in the gas supply tube (6) and extends parallel to the latter.
- A heating appliance according to claim 1, characterized in that the sensing duct (7) terminates adjacent to the front end face of the gas nozzle (17).
- A heating appliance according to claim 1 or 2, characterized in that a restrictor (11), which opens the airinlet (12) to a larger or smaller extent, is slidably mounted on the gas supply tube (6), which is provided with the sensing duct.
- A heating appliance according to any of claims 1 to 3, characterized in that the gas controller (10) is disposed on one side of a port plate (9), which on its opposite side is connected to the gas inlet (20), to a passage (16) leading to the gas supply tube (6), and to the passager (7 , 15, 19, 21) leading to various pressure-sensing locations.
- A heating appliance according to claim 4, characterized in that a port head (8) is provided on that side of the port plate (9) which is opposite to the gas controller (10) and the gas inlet (20), the passage (16) leading to the gas supply tube (6), and the passages (7, 15, 19, 21) leading to the various pressure-sensing locations are incorporated in said port head.
- A heating appliance according to claim 1, characterized in that the sensing passage (7′) is substantially centrally disposed in the gas supply tube (6) and is preferably held to be axially adaptable.
- A heating appliance according to claim 1 or 2, characterized in that the restrictor (11) comprises an orifice-defining ring (27), which surrounds the gas supply tube (6) with a large clearance and is connected to an elastomeric ring (28), which seals the gap between the inside diameter of the orifice-defining ring (27) and the gas supply tube (6) and has an inside diameter which is smaller than the outside diameter of the gas supply tube (6).
Applications Claiming Priority (6)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE9013930U | 1990-10-03 | ||
| DE9013930 | 1990-10-03 | ||
| AT71091A AT396823B (en) | 1991-04-04 | 1991-04-04 | Heating appliance with a gas fitting |
| AT70991A AT395774B (en) | 1991-04-04 | 1991-04-04 | Heating apparatus |
| AT709/91 | 1991-04-04 | ||
| AT710/91 | 1991-04-04 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP0479216A1 EP0479216A1 (en) | 1992-04-08 |
| EP0479216B1 true EP0479216B1 (en) | 1994-06-08 |
Family
ID=27146637
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP91116718A Expired - Lifetime EP0479216B1 (en) | 1990-10-03 | 1991-09-30 | Heating device |
Country Status (3)
| Country | Link |
|---|---|
| EP (1) | EP0479216B1 (en) |
| AT (1) | ATE107012T1 (en) |
| DE (2) | DE9112281U1 (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| AT401197B (en) * | 1993-08-26 | 1996-07-25 | Vaillant Gmbh | Heating appliance |
| AT400356B (en) * | 1993-11-08 | 1995-12-27 | Vaillant Gmbh | FAN BURNER |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1113532B (en) * | 1957-11-15 | 1961-09-07 | Licentia Gmbh | Jet apparatus that is used to produce a fuel mixture |
| DE2708858C2 (en) * | 1977-03-01 | 1986-04-24 | Caloric Gesellschaft für Apparatebau mbH, 8032 Gräfelfing | Control device for a burner for flowable fuels |
-
1991
- 1991-09-28 DE DE9112281U patent/DE9112281U1/en not_active Expired - Lifetime
- 1991-09-30 EP EP91116718A patent/EP0479216B1/en not_active Expired - Lifetime
- 1991-09-30 DE DE59101852T patent/DE59101852D1/en not_active Expired - Fee Related
- 1991-09-30 AT AT91116718T patent/ATE107012T1/en not_active IP Right Cessation
Also Published As
| Publication number | Publication date |
|---|---|
| ATE107012T1 (en) | 1994-06-15 |
| DE9112281U1 (en) | 1991-12-12 |
| DE59101852D1 (en) | 1994-07-14 |
| EP0479216A1 (en) | 1992-04-08 |
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