EP0509229A2 - Control device for a gas burner with a fan for supplying combustion air - Google Patents
Control device for a gas burner with a fan for supplying combustion air Download PDFInfo
- Publication number
- EP0509229A2 EP0509229A2 EP92104047A EP92104047A EP0509229A2 EP 0509229 A2 EP0509229 A2 EP 0509229A2 EP 92104047 A EP92104047 A EP 92104047A EP 92104047 A EP92104047 A EP 92104047A EP 0509229 A2 EP0509229 A2 EP 0509229A2
- Authority
- EP
- European Patent Office
- Prior art keywords
- control
- pressure
- control line
- line
- gas
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 238000002485 combustion reaction Methods 0.000 title claims abstract description 29
- 239000007789 gas Substances 0.000 claims description 24
- 239000002737 fuel gas Substances 0.000 claims description 12
- 238000011144 upstream manufacturing Methods 0.000 claims description 8
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract description 3
- 239000000567 combustion gas Substances 0.000 abstract 1
- 150000001875 compounds Chemical class 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 1
- 239000000919 ceramic Substances 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 230000001627 detrimental effect Effects 0.000 description 1
- 239000012528 membrane Substances 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
Images
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23N—REGULATING OR CONTROLLING COMBUSTION
- F23N5/00—Systems for controlling combustion
- F23N5/18—Systems for controlling combustion using detectors sensitive to rate of flow of air or fuel
- F23N5/188—Systems for controlling combustion using detectors sensitive to rate of flow of air or fuel using mechanical means
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23N—REGULATING OR CONTROLLING COMBUSTION
- F23N1/00—Regulating fuel supply
- F23N1/02—Regulating fuel supply conjointly with air supply
- F23N1/022—Regulating fuel supply conjointly with air supply using electronic means
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23N—REGULATING OR CONTROLLING COMBUSTION
- F23N2225/00—Measuring
- F23N2225/04—Measuring pressure
- F23N2225/06—Measuring pressure for determining flow
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23N—REGULATING OR CONTROLLING COMBUSTION
- F23N2233/00—Ventilators
- F23N2233/06—Ventilators at the air intake
- F23N2233/08—Ventilators at the air intake with variable speed
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23N—REGULATING OR CONTROLLING COMBUSTION
- F23N2235/00—Valves, nozzles or pumps
- F23N2235/12—Fuel valves
- F23N2235/18—Groups of two or more valves
Definitions
- the invention relates to a control device for gas burners with a fan for supplying the combustion air according to the preamble of the main claim.
- control devices of this type which are provided with a gas pressure regulator, both control lines are guided freely through the air space between the control pressure orifice and the gas pressure regulator, so that the control pressure signal is falsified if one or both control lines become leaky or broken. If the above-mentioned defect occurs in the first control line branching upstream of the control pressure orifice, this is not detrimental to hygienic burner behavior because this reduces the control pressure difference and thus also reduces the gas quantity or gas pressure, which corresponds to safe behavior of the control device (combustion under Excess air).
- the situation is different if the second control line branching downstream of the control pressure orifice leaks or breaks.
- the back pressure prevailing in the downstream gas-air mixing section is no longer present as a reference pressure at the control pressure orifice, but the atmospheric pressure, which is lower than the reference pressure is.
- the fuel gas pressure is increased, which leads to a disproportionate fuel gas throughput based on the available amount of combustion air. The result is a lack of air combustion that must be avoided.
- control devices for gas burners with a fan for supplying combustion air are known, in which the fuel gas is already introduced into the intake of combustion air flow upstream of the fan and a control pressure orifice, which influences a pneumatic gas pressure regulator, is also arranged upstream of the fan in the combustion air line.
- the reference pressure which is established downstream of the control pressure orifice is below atmospheric pressure, so that if the control line carrying the reference pressure leaks or breaks, the control pressure difference collapses and the gas pressure regulator closes the fuel gas line.
- the arrangement according to the invention with the characterizing features of the main claim has the advantage that it does not lead to an unsafe condition or to a combustion under air deficiency or to combustion in devices with a blower that only promotes combustion air and a control pressure orifice arranged downstream of the blower if the control lines become leaky or there is a line break. can come to a small position of the gas burner, in which a hygienic combustion is no longer guaranteed. If the second control line carrying the reference pressure breaks in this arrangement, this results in a short circuit between the two control lines, as a result of which the control pressure difference breaks down and the pneumatic actuator reacts in the sense of interrupting the fuel gas supply. If the first control line branched off upstream of the control pressure orifice breaks, the control pressure difference also decreases, which corresponds to a safety-related reaction of the pneumatic actuator.
- the pneumatic actuator is part of a gas pressure regulator in the fuel gas line, the setpoint of which is predetermined by the control pressure orifice in the combustion air line. This results in a pneumatic compound control for the two combustion components, air and gas, which adapts the fuel gas supply to the respective combustion air volume flow controlled by the heat requirement in the sense of optimizing the combustion for each required burner output within a predetermined output range.
- FIG. 1 An embodiment of the invention is shown in the drawing and explained in more detail in the following description.
- the single figure shows schematically a burner device for a gas-heated water heater, which is provided with a pneumatic compound control for the combustion components.
- the burner device has a fan 10 for supplying combustion air, the speed of which is controlled in accordance with the heat requirement.
- the fan 10 conveys the sucked-in combustion air into a channel 12, into which a gas line 16 carrying the fuel gas opens at the point 14.
- the channel 12 leads into a distribution chamber 18 of a premix burner 20, from which the fuel-air mixture passes through a perforated plate 22, evenly distributed, into the combustion zone 24 of the premix burner 20, which is designed as a ceramic burner block.
- the combustion takes place in a combustion chamber 26, which is closed at the bottom by a heat exchanger 28 for the water to be heated. After the heat exchanger 28, the exhaust gases enter an exhaust duct 30, which leads through a fresh air duct 32 into a chimney or into the open.
- a control pressure orifice 34 is installed in the duct 12 between the blower 10 and the point 14 and specifies a setpoint for a gas pressure regulator 36 in the gas line 16.
- the control pressure orifice 34 derives a control pressure signal in the form of a differential pressure from the air volume flow in the channel 12, which is transmitted to the gas pressure regulator 36 via two control lines 38, 40.
- the first control line 38 branches upstream of the control pressure orifice 34 from the channel 12 and leads into a high pressure chamber 42 of a pneumatic actuator 44 in the gas pressure regulator 36.
- the second control line 40 branches off downstream of the control pressure orifice 34 from the channel 12 and leads into a low pressure chamber 46 of the actuator 44, which is separated from the high pressure chamber 42 by a membrane or the like.
- the second control line 40 is led over its entire length through a prechamber 50 which is permanently connected to the high pressure chamber 42 of the actuator 44.
- the pre-chamber 50 is formed in a tube 52 which concentrically surrounds the second control line 40.
- the first control line 38 opens into the tube 52, which thereby directly forms a section of the first control line 38.
- the fuel gas supply is monitored by the gas pressure regulator 36 by two solenoid valves 54, 56, one of which, 54, is controlled by an additional differential pressure switch 58 via a switch contact 60 in such a way that it only releases the gas line 16 when the air volume flow in the duct 12 exceeds a predetermined minimum value.
- the differential pressure switch 58 is also connected to the channel 12 via two control lines 62, 64 upstream and downstream of the control pressure orifice 34.
- the differential pressure switch 58 has a second switching contact 66, which opens the second solenoid valve 56 via a control unit 68 and activates the ignition of the premix burner when a heat demand signal 70 has caused the control unit 68 to switch on the blower 10 and the pressure difference at the control pressure orifice 34 has a higher, preferably has reached the value corresponding to the nominal power of the device.
- the regulated speed of the fan 10 is reported back to the control unit 68 via a speed sensor 72. If necessary, the measure according to the invention of enveloping the control line 64 by a chamber carrying the pressure in the control line 62 could also be provided for the differential pressure switch 58.
- the pressure difference .DELTA.P St occurs at the control pressure orifice 34, which is transmitted to the gas pressure regulator 36 via the control lines 38, 50.
- this assigns a pressure difference ⁇ P Br between the reference pressure behind the control pressure orifice 34 and the fuel gas pressure to each pressure difference ⁇ P St , that the excess air assumes and maintains a predetermined constant value.
- the control line 40 leaks or breaks, the pressures in the high pressure chamber 42 and the low pressure chamber 46 of the actuator 44 equalize, causing the gas pressure regulator 36 to close the gas line 16. If the heat requirement is below a value corresponding to the lower limit of the predetermined power range or falls below this value, the modulating operation takes the place of the modulating operation, controlled by the differential pressure switch 58 and the solenoid valve 54, of the premix burner 20.
Landscapes
- 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)
Abstract
Description
Die Erfindung geht aus von einer Steuer- bzw. Regelvorrichtung für Gasbrenner mit einem Gebläse zum Zuführen der Verbrennungsluft nach der Gattung des Hauptanspruchs. Bei den bekannten, mit einem Gasdruckregler versehenen Regelvorrichtungen dieser Gattung sind beide Steuerleitungen frei durch den Luftraum zwischen der Steuerdruckblende und dem Gasdruckregler geführt, so daß bei Undichtwerden oder Bruch einer oder beider Steuerleitungen das Steuerdrucksignal verfälscht wird. Wenn der genannte Mangel bei der stromauf der Steuerdruckblende abzweigenden ersten Steuerleitung auftritt, ist das einem hygienischen Brennerverhalten nicht abträglich, weil dadurch sich die Steuerdruckdifferenz verringert und damit auch die Gasmenge bzw. der Gasdruck herabgesetzt wird, was einem sicheren Verhalten der Regelvorrichtung entspricht (Verbrennung unter Luftüberschuß). Anders verhält es sich jedoch, wenn die stromab der Steuerdruckblende abzweigende zweite Steuerleitung undicht wird oder bricht. In diesem Fall steht nicht mehr der in der nachgeschalteten Gas-Luft-Mischstrecke herrschende Gegendruck als Referenzdruck an der Steuerdruckblende an, sondern der Atmosphärendruck, der geringer als der Referenzdruck ist. Das hat zur Folge, daß der Brenngasdruck erhöht wird, was zu einem überproportionalen Brenngasdurchsatz bezogen auf die verfügbare Verbrennungsluftmenge führt. Das Ergebnis ist eine Verbrennung unter Luftmangel, die zu vermeiden ist.The invention relates to a control device for gas burners with a fan for supplying the combustion air according to the preamble of the main claim. In the known control devices of this type, which are provided with a gas pressure regulator, both control lines are guided freely through the air space between the control pressure orifice and the gas pressure regulator, so that the control pressure signal is falsified if one or both control lines become leaky or broken. If the above-mentioned defect occurs in the first control line branching upstream of the control pressure orifice, this is not detrimental to hygienic burner behavior because this reduces the control pressure difference and thus also reduces the gas quantity or gas pressure, which corresponds to safe behavior of the control device (combustion under Excess air). However, the situation is different if the second control line branching downstream of the control pressure orifice leaks or breaks. In this case, the back pressure prevailing in the downstream gas-air mixing section is no longer present as a reference pressure at the control pressure orifice, but the atmospheric pressure, which is lower than the reference pressure is. As a result, the fuel gas pressure is increased, which leads to a disproportionate fuel gas throughput based on the available amount of combustion air. The result is a lack of air combustion that must be avoided.
Ferner sind Regelvorrichtungen für Gasbrenner mit einem Gebläse zum Zuführen von Verbrennungsluft bekannt, bei denen das Brenngas bereits stromauf des Gebläses in den angesaugten Verbrennungsluftstrom eingeleitet wird und eine Steuerdruckblende, die einen pneumatischen Gasdruckregler beeinflußt, ebenfalls stromauf des Gebläses in der Verbrennungsluftleitung angeordnet ist. Bei dieser Anordnung liegt zwar der stromab der Steuerdruckblende sich einstellende Referenzdruck unter dem Atmosphärendruck, so daß bei einem Undichtwerden oder einem Bruch der den Referenzdruck führenden Steuerleitung die Steuerdruckdifferenz zusammenbricht und der Gasdruckregler die Brenngasleitung schließt. Diesem in Richtung Sicherheit gehenden Verhalten stehen jedoch die Nachteile gegenüber, daß die Abdichtung der Motorachse des Gebläses einen erhöhten Aufwand bedingt und daß sich das vom Gebläse angesaugte Brennstoff-Luftgemisch durch mechanische oder elektrostatische Funkenbildung am Gebläselaufrad entzünden kann.Furthermore, control devices for gas burners with a fan for supplying combustion air are known, in which the fuel gas is already introduced into the intake of combustion air flow upstream of the fan and a control pressure orifice, which influences a pneumatic gas pressure regulator, is also arranged upstream of the fan in the combustion air line. In this arrangement, the reference pressure which is established downstream of the control pressure orifice is below atmospheric pressure, so that if the control line carrying the reference pressure leaks or breaks, the control pressure difference collapses and the gas pressure regulator closes the fuel gas line. This safety-related behavior is offset by the disadvantages that the sealing of the motor axis of the blower requires increased effort and that the fuel-air mixture sucked in by the blower can ignite due to mechanical or electrostatic spark formation on the blower impeller.
Die erfindungsgemäße Anordnung mit den kennzeichnenden Merkmalen des Hauptanspruchs hat den Vorteil, daß es auch in Geräten mit einem nur Verbrennungsluft fördernden Gebläse und einer stromab des Gebläses angeordneten Steuerdruckblende bei Undichtwerden oder Leitungsbruch der Steuerleitungen nicht zu einem unsicheren Zustand oder zu einer Verbrennung unter Luftmangel bzw. zu einer Kleinstellung des Gasbrenners kommen kann, bei welcher eine hygienische Verbrennung nicht mehr gewährleistet ist. Bricht bei dieser Anordnung die den Referenzdruck führende zweite Steuerleitung, so resultiert daraus ein Kurzschluß zwischen beiden Steuerleitungen, wodurch die Steuerdruckdifferenz zusammenbricht und das pneumatische Stellglied im Sinne einer Unterbrechung der Brenngaszufuhr reagiert. Bricht die stromauf der Steuerdruckblende abgezweigte erste Steuerleitung, so verringert sich ebenfalls die Steuerdruckdifferenz, was einer in Richtung Sicherheit gehenden Reaktion des pneumatischen Stellglieds entspricht.The arrangement according to the invention with the characterizing features of the main claim has the advantage that it does not lead to an unsafe condition or to a combustion under air deficiency or to combustion in devices with a blower that only promotes combustion air and a control pressure orifice arranged downstream of the blower if the control lines become leaky or there is a line break. can come to a small position of the gas burner, in which a hygienic combustion is no longer guaranteed. If the second control line carrying the reference pressure breaks in this arrangement, this results in a short circuit between the two control lines, as a result of which the control pressure difference breaks down and the pneumatic actuator reacts in the sense of interrupting the fuel gas supply. If the first control line branched off upstream of the control pressure orifice breaks, the control pressure difference also decreases, which corresponds to a safety-related reaction of the pneumatic actuator.
Durch die in den Unteransprüchen angegebenen Maßnahmen sind vorteilhafte Ausgestaltungen der Anordnung nach dem Hauptanspruch möglich.The measures specified in the subclaims allow advantageous configurations of the arrangement according to the main claim.
Bei einer bevorzugten Ausführung ist das pneumatische Stellglied Teil eines Gasdruckreglers in der Brenngasleitung, dessen Sollwert von der Steuerdruckblende in der Verbrennungsluftleitung vorgegeben ist. Dadurch ergibt sich eine pneumatische Verbundregelung für die beiden Verbrennungskomponenten Luft und Gas, die bei jeder geforderten Brennerleistung innerhalb eines vorgegebenen Leistungsbereichs die Brenngaszufuhr dem jeweiligen, vom Wärmebedarf gesteuerten Verbrennungsluftvolumenstrom im Sinne einer Optimierung der Verbrennung anpaßt.In a preferred embodiment, the pneumatic actuator is part of a gas pressure regulator in the fuel gas line, the setpoint of which is predetermined by the control pressure orifice in the combustion air line. This results in a pneumatic compound control for the two combustion components, air and gas, which adapts the fuel gas supply to the respective combustion air volume flow controlled by the heat requirement in the sense of optimizing the combustion for each required burner output within a predetermined output range.
Ein Ausführungsbeispiel der Erfindung ist in der Zeichnung dargestellt und in der nachfolgenden Beschreibung näher erläutert. Die einzige Figur zeigt schematisch eine Brennereinrichtung für einen gasbeheizten Wassererhitzer, die mit einer pneumatischen Verbundregelung für die Verbrennungskomponenten versehen ist.An embodiment of the invention is shown in the drawing and explained in more detail in the following description. The single figure shows schematically a burner device for a gas-heated water heater, which is provided with a pneumatic compound control for the combustion components.
Die Brennereinrichtung hat ein Gebläse 10 zum Zuführen von Verbrennungsluft, dessen Drehzahl der Wärmeanforderung entsprechend gesteuert ist. Das Gebläse 10 fördert die angesaugte Verbrennungsluft in einen Kanal 12, in welchen an der Stelle 14 eine das Brenngas führende Gasleitung 16 einmündet. Der Kanal 12 führt in eine Verteilerkammer 18 eines Vormischbrenners 20, aus welcher das Brennstoff-Luftgemisch durch ein Lochblech 22 gleichmäßig verteilt in die als Keramik-Brennerstein ausgebildete Brennzone 24 des Vormischbrenners 20 gelangt. Die Verbrennung erfolgt in einer Brennkammer 26, die unten durch einen Wärmeübertrager 28 für das zu erhitzende Wasser abgeschlossen ist. Hinter dem Wärmeübertrager 28 gelangen die Abgase in einen Abgaskanal 30, der durch einen Frischluftkanal 32 hindurch in einen Schornstein oder in das Freie führt.The burner device has a
In den Kanal 12 ist zwischen dem Gebläse 10 und der Stelle 14 eine Steuerdruckblende 34 eingebaut, die einen Sollwert für einen Gasdruckregler 36 in der Gasleitung 16 vorgibt. Die Steuerdruckblende 34 leitet aus dem Luftvolumenstrom im Kanal 12 ein Steuerdrucksignal in Form eines Differenzdruckes ab, der über zwei Steuerleitungen 38, 40 an den Gasdruckregler 36 übertragen wird. Die erste Steuerleitung 38 zweigt stromauf der Steuerdruckblende 34 vom Kanal 12 ab und führt in eine Hochdruckkammer 42 eines pneumatischen Stellglieds 44 im Gasdruckregler 36. Die zweite Steuerleitung 40 zweigt stromab der Steuerdruckblende 34 vom Kanal 12 ab und führt in eine Niederdruckkammer 46 des Stellglieds 44, die von der Hochdruckkammer 42 durch eine Membran oder dergleichen getrennt ist.A control pressure orifice 34 is installed in the
Die zweite Steuerleitung 40 ist erfindungsgemäß über ihre gesamte Länge durch eine Vorkammer 50 hindurchgeführt, die mit der Hochdruckkammer 42 des Stellglieds 44 ständig verbunden ist.According to the invention, the
Die Vorkammer 50 ist in einem Rohr 52 gebildet, das die zweite Steuerleitung 40 konzentrisch umgibt. Die erste Steuerleitung 38 mündet in das Rohr 52 ein, welches dadurch unmittelbar eine Teilstrecke der ersten Steuerleitung 38 bildet.The pre-chamber 50 is formed in a
Die Brenngaszufuhr ist außer von dem Gasdruckregler 36 von zwei Magnetventilen 54, 56 überwacht, von denen das eine, 54, von einem zusätzlichen Differenzdruckschalter 58 über einen Schaltkontakt 60 so gesteuert ist, daß es die Gasleitung 16 nur freigibt, wenn der Luftvolumenstrom im Kanal 12 einen vorgegebenen Mindestwert überschreitet. Zu diesem Zweck ist der Differenzdruckschalter 58 ebenfalls über zwei Steuerleitungen 62, 64 stromauf und stromab der Steuerdruckblende 34 an den Kanal 12 angeschlossen. Der Differenzdruckschalter 58 hat einen zweiten Schaltkontakt 66, der über ein Steuergerät 68 das zweite Magnetventil 56 öffnet und die Zündung des Vormischbrenners aktiviert, wenn ein Wärmebedarfssignal 70 das Steuergerät 68 zum Einschalten des Gebläses 10 veranlaßt hat und die Druckdifferenz an der Steuerdruckblende 34 einen höheren, vorzugsweise den der Nennleistung des Geräts entsprechenden Wert erreicht hat. Die geregelte Drehzahl des Gebläses 10 wird über einen Drehzahlgeber 72 an das Steuergerät 68 zurückgemeldet. Im Bedarfsfall könnte auch für den Differenzdruckschalter 58 die erfindungsgemäße Maßnahme der Umhüllung der Steuerleitung 64 durch eine den Druck in der Steuerleitung 62 führende Kammer vorgesehen werden.The fuel gas supply is monitored by the
Im Betrieb des Geräts fällt an der Steuerdruckblende 34 die Druckdifferenz ΔPSt an, die über die Steuerleitungen 38, 50 an den Gasdruckregler 36 übertragen wird. Dieser ordnet innerhalb eines vorgegebenen Leistungsbereichs des Vormischbrenners 20 jeder Druckdifferenz ΔPSt eine Druckdifferenz ΔPBr zwischen dem Referenzdruck hinter der Steuerdruckblende 34 und dem Brenngasdruck so zu, daß der Luftüberschuß einen vorgegebenen konstanten Wert annimmt und beibehält. Wenn die Steuerleitung 40 undicht wird oder bricht, gleichen sich die Drücke in der Hochdruckkammer 42 und der Niederdruckkammer 46 des Stellglieds 44 aus, wodurch der Gasdruckregler 36 die Gasleitung 16 schließt. Wenn die Wärmeanforderung unter einem der unteren Grenze des vorgegebenen Leistungsbereichs entsprechenden Wert liegt bzw. unter diesen Wert absinkt, tritt an die Stelle des modulierenden Betriebs ein durch den Differenzdruckschalter 58 und das Magnetventil 54 gesteuerter Auf-Zu-Betrieb des Vormischbrenners 20 ein.During operation of the device, the pressure difference .DELTA.P St occurs at the control pressure orifice 34, which is transmitted to the
Claims (5)
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE4112865A DE4112865A1 (en) | 1991-04-19 | 1991-04-19 | TAX OR CONTROL DEVICE FOR GAS BURNERS WITH A BLOWER FOR SUPPLYING THE COMBUSTION AIR |
| DE4112865 | 1991-04-19 |
Publications (3)
| Publication Number | Publication Date |
|---|---|
| EP0509229A2 true EP0509229A2 (en) | 1992-10-21 |
| EP0509229A3 EP0509229A3 (en) | 1993-01-13 |
| EP0509229B1 EP0509229B1 (en) | 1996-02-07 |
Family
ID=6429968
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP92104047A Expired - Lifetime EP0509229B1 (en) | 1991-04-19 | 1992-03-10 | Control device for a gas burner with a fan for supplying combustion air |
Country Status (2)
| Country | Link |
|---|---|
| EP (1) | EP0509229B1 (en) |
| DE (2) | DE4112865A1 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1030108A1 (en) * | 1999-02-19 | 2000-08-23 | Robert Bosch Gmbh | Gasburner and method for operating a gasburner |
| EP2292976A3 (en) * | 2009-09-02 | 2012-11-21 | LOI Thermprocess GmbH | Radiant heater |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE4402036C2 (en) * | 1994-01-25 | 1997-06-12 | Dungs Karl Gmbh & Co | Compound pressure switch |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4706881A (en) * | 1985-11-26 | 1987-11-17 | Carrier Corporation | Self-correcting microprocessor control system and method for a furnace |
| DE8004780U1 (en) * | 1980-02-22 | 1989-06-15 | G. Kromschröder AG, 4500 Osnabrück | Control device for gas burners |
-
1991
- 1991-04-19 DE DE4112865A patent/DE4112865A1/en not_active Withdrawn
-
1992
- 1992-03-10 EP EP92104047A patent/EP0509229B1/en not_active Expired - Lifetime
- 1992-03-10 DE DE59205272T patent/DE59205272D1/en not_active Expired - Fee Related
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE8004780U1 (en) * | 1980-02-22 | 1989-06-15 | G. Kromschröder AG, 4500 Osnabrück | Control device for gas burners |
| US4706881A (en) * | 1985-11-26 | 1987-11-17 | Carrier Corporation | Self-correcting microprocessor control system and method for a furnace |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1030108A1 (en) * | 1999-02-19 | 2000-08-23 | Robert Bosch Gmbh | Gasburner and method for operating a gasburner |
| EP2292976A3 (en) * | 2009-09-02 | 2012-11-21 | LOI Thermprocess GmbH | Radiant heater |
Also Published As
| Publication number | Publication date |
|---|---|
| DE59205272D1 (en) | 1996-03-21 |
| EP0509229A3 (en) | 1993-01-13 |
| EP0509229B1 (en) | 1996-02-07 |
| DE4112865A1 (en) | 1992-10-22 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| EP2014979A2 (en) | Operating device for a high-power surface burner and operating method for same | |
| DE2322480A1 (en) | DEVICE CONNECTED TO GAS BURNER TO CONTROL THE COMBUSTION IN THE EVENT OF CHANGES IN PRESSURE IN THE DISTRIBUTION NETWORK | |
| EP0509229B1 (en) | Control device for a gas burner with a fan for supplying combustion air | |
| EP3957910A1 (en) | Method and assembly for the pneumatic mixture formation in a premix burner | |
| EP0567060A1 (en) | Method for controlling a gas burner with a fan | |
| DE19501749C2 (en) | Method and device for controlling a gas fan burner | |
| EP0866270B1 (en) | Gas-fired heating apparatus, especially a water heater | |
| EP0434599B1 (en) | Premixing gas burner | |
| DE3105862A1 (en) | Gas blower burner | |
| DE19906935A1 (en) | Gas burner and method for operating a gas burner | |
| DE3005393A1 (en) | CARBURETTOR DEVICE | |
| EP0959300A2 (en) | Method and device for operating an atmospheric, in particular a fully premixed gas burner | |
| DE102009037890B4 (en) | Apparatus for adjusting an output pressure of a fuel gas volume flow, method for adjusting an output pressure and use of the apparatus in a combustion gas-air mixing device for a combustion system | |
| EP0036613B1 (en) | Regulation apparatus for a gas-fired water or air heater which is controllable by a temperature sensor | |
| DE19756301B4 (en) | Device for the preparation of a gas-air mixture | |
| DE19750873A1 (en) | Method for controlling atmospheric gas burners for water heating appliances | |
| DE3818049A1 (en) | Device for controlling the fuel feed to a fuel-fired device | |
| DE2756513A1 (en) | ENGINE FUEL REGULATOR | |
| EP0916895B1 (en) | Method for controlling an atmospheric gas burner for heaters, especially for water heaters | |
| DE29808799U1 (en) | Control device for gas burners | |
| DE914728C (en) | Process for heating coke stoves with strong gases with fluctuating calorific value | |
| DE721279C (en) | Control device for the main fuel valve of heaters which are heated with gaseous or liquid fuels and to which the air flow required for combustion or an air flow to be heated is supplied under pressure or suction | |
| AT398622B (en) | Method for controlling a blower-type burner | |
| DE3044678A1 (en) | Control for gas-fired water or air heater - controls supply of both fuel gas and combustion air without delay using temp. sensor, valve and setting device | |
| DE10057903C2 (en) | Atmospheric gas burner for a boiler |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PUAI | Public reference made under article 153(3) epc to a published international application that has entered the european phase |
Free format text: ORIGINAL CODE: 0009012 |
|
| AK | Designated contracting states |
Kind code of ref document: A2 Designated state(s): DE FR GB IT |
|
| PUAL | Search report despatched |
Free format text: ORIGINAL CODE: 0009013 |
|
| AK | Designated contracting states |
Kind code of ref document: A3 Designated state(s): DE FR GB IT |
|
| 17P | Request for examination filed |
Effective date: 19930607 |
|
| 17Q | First examination report despatched |
Effective date: 19950201 |
|
| GRAA | (expected) grant |
Free format text: ORIGINAL CODE: 0009210 |
|
| AK | Designated contracting states |
Kind code of ref document: B1 Designated state(s): DE FR GB IT |
|
| ET | Fr: translation filed | ||
| REF | Corresponds to: |
Ref document number: 59205272 Country of ref document: DE Date of ref document: 19960321 |
|
| ITF | It: translation for a ep patent filed | ||
| GBT | Gb: translation of ep patent filed (gb section 77(6)(a)/1977) |
Effective date: 19960418 |
|
| PLBE | No opposition filed within time limit |
Free format text: ORIGINAL CODE: 0009261 |
|
| STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT |
|
| 26N | No opposition filed | ||
| REG | Reference to a national code |
Ref country code: GB Ref legal event code: IF02 |
|
| PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: FR Payment date: 20020320 Year of fee payment: 11 |
|
| PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: GB Payment date: 20030227 Year of fee payment: 12 |
|
| PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: DE Payment date: 20030425 Year of fee payment: 12 |
|
| PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: FR Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20031127 |
|
| REG | Reference to a national code |
Ref country code: FR Ref legal event code: ST |
|
| PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: GB Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20040310 |
|
| PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: DE Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20041001 |
|
| GBPC | Gb: european patent ceased through non-payment of renewal fee |
Effective date: 20040310 |
|
| PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: IT Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20050310 |