EP0340611A2 - Device for combustion air supply controlling - Google Patents

Device for combustion air supply controlling Download PDF

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Publication number
EP0340611A2
EP0340611A2 EP89107516A EP89107516A EP0340611A2 EP 0340611 A2 EP0340611 A2 EP 0340611A2 EP 89107516 A EP89107516 A EP 89107516A EP 89107516 A EP89107516 A EP 89107516A EP 0340611 A2 EP0340611 A2 EP 0340611A2
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EP
European Patent Office
Prior art keywords
combustion air
control device
fuel gas
line
throughput
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
Application number
EP89107516A
Other languages
German (de)
French (fr)
Other versions
EP0340611A3 (en
EP0340611B1 (en
Inventor
Karl-Ernst Vaillant
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.)
Nv Vaillant Sa
Vaillant-Schonewelle BV
Vaillant Austria GmbH
Vaillant GmbH
Vaillant SARL
Vaillant Ltd
Original Assignee
Vaillant Austria GmbH
Nv Vaillant Sa
Joh Vaillant GmbH and Co
Vaillant GmbH
Vaillant SARL
Vaillant Ltd
Vaillant-Schonewelle BV
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Vaillant Austria GmbH, Nv Vaillant Sa, Joh Vaillant GmbH and Co, Vaillant GmbH, Vaillant SARL, Vaillant Ltd, Vaillant-Schonewelle BV filed Critical Vaillant Austria GmbH
Priority to AT89107516T priority Critical patent/ATE85694T1/en
Publication of EP0340611A2 publication Critical patent/EP0340611A2/en
Publication of EP0340611A3 publication Critical patent/EP0340611A3/en
Application granted granted Critical
Publication of EP0340611B1 publication Critical patent/EP0340611B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23N—REGULATING OR CONTROLLING COMBUSTION
    • F23N1/00—Regulating fuel supply
    • F23N1/08—Regulating fuel supply conjointly with another medium, e.g. boiler water
    • F23N1/085—Regulating fuel supply conjointly with another medium, e.g. boiler water using electrical or electromechanical 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
    • F23N2235/16—Fuel valves variable flow or proportional valves
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23N—REGULATING OR CONTROLLING COMBUSTION
    • F23N2239/00—Fuels
    • F23N2239/04—Gaseous fuels
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23N—REGULATING OR CONTROLLING COMBUSTION
    • F23N2241/00—Applications
    • F23N2241/04—Heating water

Definitions

  • the invention relates first of all to a method for regulating the supply of combustion air and / or fuel gas to a combustion of a fuel gas / combustion air mixture which serves to heat a flowing, fluid medium, in particular water.
  • the object of the invention is to provide a particularly sensitive control which ensures permanent compliance with an optimal composition of the mixture and thus an optimal and accordingly pollutant-free combustion.
  • the combustion air and / or the fuel gas throughput is regulated as a function of the respective throughput of the medium to be heated.
  • a device suitable for carrying out this method comprises, within the scope of the invention, a heat exchanger fed via a water supply line, and a gas burner assigned to this heat exchanger, to which combustion gas is supplied via a nozzle and via a combustion air guide by means of a blower, combustion air.
  • a device is characterized according to the invention by a water flow meter arranged in the water supply or dispensing line and a control device controlled by it for regulating the combustion air and fuel gas throughput.
  • control device for regulating the combustion air is set designed as a speed controller of the blower motor.
  • control device can be connected via a control line to a valve which continuously adjusts the fuel gas supply to the gas burner and is arranged in the fuel gas supply line to the gas burner.
  • a piezoelectric pressure sensor, a potentiometer or an optical sensor can be provided as the signal transmitter;
  • a sensor can consist, for example, of an aperture movable between a light source and a light receiver, the aperture being adjustable by the water flow meter and the light receiver embodying the signal transmitter.
  • control device for controlling the combustion air throughput can consist of a control loop with feedback, wherein a pole wheel is arranged on the fan shaft to generate the feedback signal, which in turn acts on a Hall sensor.
  • FIG. 1 shows a gas burner 1 with a combustion air guide 2, in which a blower serving to supply the combustion air is arranged with a blower wheel 4 driven by a blower motor 3.
  • the fuel gas is supplied to the gas burner 1 via a nozzle 5 from a fuel gas supply line 6 in a quantity regulated by means of the control valve 7.
  • this gas burner 1 there is a heat exchanger 8, which is supplied with water from a water supply line 9 and to which a tap line 10 with a tap valve 11 for the heated water is connected.
  • the water throughput in the water supply line 9 and the tap line 10, that is to say the amount of water flowing through these lines per unit of time, is measured by a differential pressure transmitter 12 with a membrane 13 and a flow restrictor 14.
  • the membrane chambers 15 and 16 are connected via the branch lines 17 and 18 upstream and downstream of the throttle 14 to the water supply line 9 and the water throughput can be determined with the differential pressure, the measured value of which - in the embodiment according to FIG. 1 - via a displacement sensor 19 of the membrane 13 a signal transmitter designed as a pressure sensor 21, generally designated 20, is transmitted.
  • This signal generator 20 is connected via a control line 22 to an electronic control device 23, which in turn is connected via the control line 24 to the valve 7 regulating the fuel gas throughput in the fuel gas supply line 6 and on the other hand via a control line 25 to a speed controller 26 of the blower motor 3.
  • the control of the speed of the blower motor 3 and the fuel gas control valve 7 takes place such that the combustion air throughput and the fuel gas throughput are not only optimally coordinated with one another, but also correspond to the burner output required in each case.
  • the feedback of the speed controller 26 is generated via the control line 37 by the Hall sensor 28 assigned to a pole wheel 27 of the fan output shaft.
  • the membrane 13 is assigned a potentiometer, on the wire turns 30 of which an assigned actuator 29 of the membrane 13 acts as a sliding contact and determines the size of a signal current transmitted via the control line 22 of the control device 23.
  • the signal generator 20 includes an orifice 31 which is adjustable by an actuator 29 of the membrane 13 and which is located between a light source 35 supplied via a circuit 32 with a current source 33 and a resistor 34 and a light-sensitive resistor 36 which acts as a signal generator the control line 22 to the control device 23 is active.

Abstract

According to a method of controlling the supply of combustion air to combustion of a fuel-gas/combustion air mixture, which serves to heat a flowing fluid medium, in particular water, the combustion air throughput is controlled depending on the throughput of the medium to be heated. A device which is suitable for carrying out this method comprises a heat exchanger (8) fed via a water supply pipe (9), and a gas burner (1) which is assigned to this heat exchanger (8) and to which combustion air is supplied via a combustion air guide (2) by means of a blower (3, 4) and fuel gas is supplied via a gas nozzle (5). In the water supply pipe (9) or in the tap line (10) connected to the heat exchanger (8), a water throughput measuring device (14 - 19) is arranged and controls the combustion air throughput as well as - via a control valve (7) - the fuel-gas throughput to the burner (1). <IMAGE>

Description

Die Erfindung betrifft zunächst ein Verfahren zur Regelung der Verbrennungsluft- und/oder Brenngas-Zufuhr zu einer der Beheizung eines strömenden, fluiden Mediums, insbesondere Wasser, dienenden Verbrennung eines Brenngas-Verbrennungsluft-Gemisches.The invention relates first of all to a method for regulating the supply of combustion air and / or fuel gas to a combustion of a fuel gas / combustion air mixture which serves to heat a flowing, fluid medium, in particular water.

Aufgabe der Erfindung ist es, eine besonders feinfühlige Rege­lung zu schaffen, die eine dauernde Einhaltung einer optimalen Zusammensetzung des Gemisches und damit eine optimale und dem­entsprechend schadstofffreie Verbrennung gewährleistet.The object of the invention is to provide a particularly sensitive control which ensures permanent compliance with an optimal composition of the mixture and thus an optimal and accordingly pollutant-free combustion.

Erfindungsgemäß wird der Verbrennungsluft- und/oder der Brenngas- Durchsatz in Abhängigkeit vom jeweiligen Durchsatz des zu beheizenden Mediums geregelt.According to the invention, the combustion air and / or the fuel gas throughput is regulated as a function of the respective throughput of the medium to be heated.

Eine zur Durchführung dieses Verfahrens geeignete Vorrichtung umfaßt im Rahmen der Erfindung einen über eine Wasserzufuhr­leitung gespeisten Wärmetauscher, sowie einen diesem Wärme­tauscher zugeordneten Gasbrenner, dem über eine Düse Brenngas und über eine Verbrennungsluftführung mittels eines Gebläses Verbrennungsluft zugeführt wird. Eine solche Vorrichtung ist erfindungsgemäß gekennzeichnet durch einen in der Wasserzufuhr- oder Zapfleitung angeordneten Wasserdurchsatzmesser und eine von ihm gesteuerte Regelvorrichtung zur Regelung des Verbrennungs­luft- und Brenngasdurchsatzes.A device suitable for carrying out this method comprises, within the scope of the invention, a heat exchanger fed via a water supply line, and a gas burner assigned to this heat exchanger, to which combustion gas is supplied via a nozzle and via a combustion air guide by means of a blower, combustion air. Such a device is characterized according to the invention by a water flow meter arranged in the water supply or dispensing line and a control device controlled by it for regulating the combustion air and fuel gas throughput.

Nach einer bevorzugten, gut praktikablen Ausführungsform ist die Regelvorrichtung zur Regelung des Verbrennungsluftdurch­ satzes als Drehzahlregler des Gebläsemotors ausgebildet.According to a preferred, well practicable embodiment, the control device for regulating the combustion air is set designed as a speed controller of the blower motor.

Vorteilhafterweise kann dieselbe Regelvorrichtung über eine Steuerleitung mit einem die Brenngaszufuhr zum Gasbrenner stufenlos regelnden, in der Brenngaszufuhrleitung zum Gas­brenner angeordneten Ventil verbunden sein.Advantageously, the same control device can be connected via a control line to a valve which continuously adjusts the fuel gas supply to the gas burner and is arranged in the fuel gas supply line to the gas burner.

Hinsichtlich der Ausbildung eines dem Wasserdurchsatzmesser als Signalgeber für die Regelvorrichtung zuzuordnenden und über eine Steuerleitung mit der Regelvorrichtung zu verbindenden Signal­gebers bestehen im Rahmen der Erfindung verschiedenerlei ziel­führende und wahlweise zu verwirklichende Möglichkeiten.With regard to the design of a signal transmitter to be assigned to the water flow meter as a signal transmitter for the control device and to be connected to the control device via a control line, there are various target-oriented and optionally implementable possibilities within the scope of the invention.

So kann als Signalgeber ein piezoelektrischer Drucksensor, ein Potentiometer oder ein optischer Fühler vorgesehen werden; im letztgenannten Fall kann ein solcher Fühler beispielsweise aus einer zwischen einer Lichtquelle und einem Lichtempfänger beweglichen Blende bestehen, wobei die Blende vom Wasserdurch­satzmesser verstellbar ist und der Lichtempfänger den Signal­geber verkörpert.For example, a piezoelectric pressure sensor, a potentiometer or an optical sensor can be provided as the signal transmitter; In the latter case, such a sensor can consist, for example, of an aperture movable between a light source and a light receiver, the aperture being adjustable by the water flow meter and the light receiver embodying the signal transmitter.

Schließlich kann die Regelvorrichtung zur Regelung des Ver­brennungsluftdurchsatzes aus einem Regelkreis mit Rückführung bestehen, wobei zur Erzeugung des Rückführungssignales ein Polrad auf der Gebläsewelle angeordnet ist, das wiederum auf einen Hallsensor einwirkt.Finally, the control device for controlling the combustion air throughput can consist of a control loop with feedback, wherein a pole wheel is arranged on the fan shaft to generate the feedback signal, which in turn acts on a Hall sensor.

Ausführungsbeispiele erfindungsgemäßer Vorrichtungen sind nach­stehend an Hand von Zeichnungen erläutert.Embodiments of devices according to the invention are explained below with reference to drawings.

In diesen Zeichnungen zeigt

  • Fig.1 die gesamte Vorrichtung in schematischer Dar­stellunbg und die
  • Fig. 2 und 3 stellen in Ausschnitten aus diesem Schema Varianten des Signalgebers des Wasser­durchsatzmessers dar.
In these drawings shows
  • 1 shows the entire device in a schematic representation and the
  • 2 and 3 show in sections from this scheme variants of the signal transmitter of the water flow meter.

Zunächst zeigt Fig.1 einen Gasbrenner 1 mit einer Verbrennungs­luftführung 2, in der ein der Verbrennungsluftzufuhr dienendes Gebläse mit einem über einen Gebläsemotor 3 angetriebenen Gebläserad 4 angeordnet ist. Das Brenngas wird dem Gasbrenner 1 über eine Düse 5 aus einer Brenngaszufuhrleitung 6 in einer mittels des Regelventiles 7 geregelten Menge zugeführt.1 shows a gas burner 1 with a combustion air guide 2, in which a blower serving to supply the combustion air is arranged with a blower wheel 4 driven by a blower motor 3. The fuel gas is supplied to the gas burner 1 via a nozzle 5 from a fuel gas supply line 6 in a quantity regulated by means of the control valve 7.

In der Abgasführung dieses Gasbrenners 1 befindet sich ein Wärmetauscher 8, der aus einer Wasserzufuhrleitung 9 mit Wasser versorgt wird und dem eine Zapfleitung 10 mit einem Zapfventil 11 für das beheizte Wasser angeschlossen ist.In the exhaust gas duct of this gas burner 1 there is a heat exchanger 8, which is supplied with water from a water supply line 9 and to which a tap line 10 with a tap valve 11 for the heated water is connected.

Der Wasserdurchsatz in der Wasserzufuhrleitung 9 und der Zapf­leitung 10, also die diese Leitungen pro Zeiteinheit durch­strömende Wassermenge, wird von einem Differenzdruckgeber 12 mit einer Membran 13 und einer Strömungsdrossel 14 gemessen. Die Membrankammern 15 und 16 sind über die Zweigleitungen 17 und 18 vor und hinter der Drossel 14 mit der Wasserzufuhrleitung 9 verbunden und mit dem Differenzdruck ist der Wasserdurchsatz bestimmbar, dessen Meßwert - bei dem Ausführungsbeispiel nach Fig. 1 - über einen Weggeber 19 der Membran 13 einem als Druck­sensor 21 ausgebildeten, allgemein mit 20 bezeichneten Signal­geber übermittelt wird. Dieser Signalgeber 20 ist über eine Steuerleitung 22 mit einer elektronischen Regelvorrichtung 23 verbunden, die ihrerseits über die Steuerleitung 24 mit dem den Brenngasdurchsatz in der Brenngaszufuhrleitung 6 regelnden Ventil 7 und anderseits über eine Steuerleitung 25 mit einem Drehzahlregler 26 des Gebläsemotors 3 verbunden ist.The water throughput in the water supply line 9 and the tap line 10, that is to say the amount of water flowing through these lines per unit of time, is measured by a differential pressure transmitter 12 with a membrane 13 and a flow restrictor 14. The membrane chambers 15 and 16 are connected via the branch lines 17 and 18 upstream and downstream of the throttle 14 to the water supply line 9 and the water throughput can be determined with the differential pressure, the measured value of which - in the embodiment according to FIG. 1 - via a displacement sensor 19 of the membrane 13 a signal transmitter designed as a pressure sensor 21, generally designated 20, is transmitted. This signal generator 20 is connected via a control line 22 to an electronic control device 23, which in turn is connected via the control line 24 to the valve 7 regulating the fuel gas throughput in the fuel gas supply line 6 and on the other hand via a control line 25 to a speed controller 26 of the blower motor 3.

In Abhängigkeit vom jeweiligen variablen Wasserdurchsatz in der Wasserzufuhrleitung 9 erfolgt die Steuerung der Drehzahl des Gebläsemotors 3 sowie des Brenngasregelventiles 7 derart, daß der Verbrennungsluftdurchsatz und der Brenngasdurchsatz nicht nur optimal aufeinander abgestimmt sind, sondern auch der jeweils erforderlichen Brennerleistung entsprechen.Depending on the respective variable water throughput in the water supply line 9, the control of the speed of the blower motor 3 and the fuel gas control valve 7 takes place such that the combustion air throughput and the fuel gas throughput are not only optimally coordinated with one another, but also correspond to the burner output required in each case.

Die Rückführung des Drehzahlreglers 26 wird über die Steuerleitung 37 von dem einem Polrad 27 der Gebläseabtriebswelle zugeordneten Hall-Sensor 28 erzeugt.The feedback of the speed controller 26 is generated via the control line 37 by the Hall sensor 28 assigned to a pole wheel 27 of the fan output shaft.

Bei der Ausführungsform des Signalgebers 20 nach Fig.2 ist der Membran 13 ein Potentiometer zugeordnet, auf dessen Drahtwindun­gen 30 ein zugeordnetes Stellglied 29 der Membran 13 als Schleif­kontakt einwirkt und die Größe eines über die Steuerleitung 22 der Regelvorrichtung 23 übermittelten Signalstromes festlegt.In the embodiment of the signal transmitter 20 according to FIG. 2, the membrane 13 is assigned a potentiometer, on the wire turns 30 of which an assigned actuator 29 of the membrane 13 acts as a sliding contact and determines the size of a signal current transmitted via the control line 22 of the control device 23.

Nach Fig.3 gehört zum Signalgeber 20 eine von einem Stellglied 29 der Membran 13 verstellbare Blende 31, die sich zwischen einer über einen Stromkreis 32 mit einer Stromquelle 33 und einem Widerstand 34 versorgten Lichtquelle 35 und einem licht­empfindlichen Widerstand 36 befindet, der als Signalgeber über die Steuerleitung 22 zur Regelvorrichtung 23 tätig ist.According to FIG. 3, the signal generator 20 includes an orifice 31 which is adjustable by an actuator 29 of the membrane 13 and which is located between a light source 35 supplied via a circuit 32 with a current source 33 and a resistor 34 and a light-sensitive resistor 36 which acts as a signal generator the control line 22 to the control device 23 is active.

Claims (8)

1. Verfahren zur Regelung der Verbrennungsluft- und/oder Brenn­gas-Zufuhr zu einer der Beheizung eines strömenden, fluiden Mediums, insbesondere Wasser, dienenden Verbrennung eines Brenngas-Verbrennungsluft-Gemisches, dadurch gekennzeichnet, daß der Verbrennungsluft- und/oder Brenngas-Durchsatz in Abhängigkeit vom jeweiligen Durchsatz des zu beheizenden Mediums geregelt wird.1. A method for controlling the combustion air and / or fuel gas supply to one of the heating of a flowing, fluid medium, in particular water, serving combustion of a fuel gas-combustion air mixture, characterized in that the combustion air and / or fuel gas throughput in Is regulated depending on the respective throughput of the medium to be heated. 2. Vorrichtung zur Durchführung des Verfahrens nach Anspruch 1 mit einem über eine Wasserzufuhrleitung gespeisten Wärme­tauscher, sowie einem diesem Wärmetauscher zugeordneten Gas­brenner, dem über eine Düse Brenngas und über eine Verbrennungs­luftführung mittels eines Gebläses Verbrennungsluft zugeführt wird, gekennzeichnet durch einen in der Wasserzufuhrleitung (9) oder Zapfleitung (10) angeordneten Wasserdurchsatzmesser (14-19) und einer von ihm gesteuerten Regelvorrichtung (23) zur Regelung des Verbrennungsluftdurchsatzes und/oder Brenngasdurchsatzes (Fig.1).2. Device for carrying out the method according to claim 1 with a heat exchanger fed via a water supply line, and a gas burner assigned to this heat exchanger, to which combustion gas is supplied via a nozzle and combustion air supply by means of a blower, characterized by a in the water supply line (9) or dispensing line (10) arranged water flow meter (14-19) and a control device (23) controlled by him for regulating the combustion air flow and / or fuel gas flow (Fig.1). 3. Vorrichtung nach Anspruch 2, dadurch gekennzeichnet, daß die Regelvorrichtung (23) zur Regelung des Verbrennungsluft­durchsatzes als Drehzahlregler (26) des Gebläsemotors (3) ausgebildet ist (Fig.1).3. Apparatus according to claim 2, characterized in that the control device (23) for controlling the combustion air flow rate is designed as a speed controller (26) of the blower motor (3) (Fig.1). 4. Vorrichtung nach Anspruch 2 oder 3, dadurch gekennzeichnet, daß dieselbe Regelvorrichtung (23) über eine Steuerleitung (24) mit einem die Brenngaszufuhr zum Gasbrenner (1) stufenlos regelnden, in der Brenngaszufuhrleitung (6) zum Gasbrenner (1) angeordneten Ventil (7) verbunden ist (Fig.1).4. Apparatus according to claim 2 or 3, characterized in that the same control device (23) via a control line (24) is connected to a valve (7) which regulates the fuel gas supply to the gas burner (1) in a stepless manner and which is arranged in the fuel gas supply line (6) to the gas burner (1) (FIG. 1). 5. Vorrichtung nach einem der Ansprüche 1 bis 4, dadurch gekennzeichnet, daß dem Wasserdurchsatzmesser (14 - 19) als Signalgeber (20) für die Regelvorrichtung (23) ein mit dieser Regelvorrichtung (23) über eine Steuerleitung (22) verbundener piezoelektrischer Drucksensor (2l) zugeordnet ist (Fig.1).5. Device according to one of claims 1 to 4, characterized in that the water flow meter (14 - 19) as a signal generator (20) for the control device (23) with this control device (23) via a control line (22) connected piezoelectric pressure sensor ( 2l) is assigned (Fig.1). 6. Vorrichtung nach einem der Ansprüche 1 bis 4, dadurch gekennzeichnet, daß dem Wasserdurchsatzmesser (14 - 19) als Signalgeber (20) für die Regelvorrichtung (23) ein mit dieser Regelvorrichtung (23) über eine Steuerleitung (22) verbundenes Potentiometer (30) zugeordnet ist (Fig.2)6. Device according to one of claims 1 to 4, characterized in that the water flow meter (14 - 19) as a signal generator (20) for the control device (23) with this control device (23) via a control line (22) connected potentiometer (30 ) is assigned (Fig. 2) 7. Vorrichtung nach einem der Ansprüche 1 bis 4, dadurch gekennzeichnet, daß dem Wasserdurchsatzmesser (14 - 19) als Signalgeber (20) für die Regelvorrichtung (23) ein mit dieser Regelvorrichtung (23) über eine Steuerleitung (22) verbundener, beispielsweise aus einer zwischen einer Lichtquelle (35) und einem Lichtempfänger (36) beweglichen Blende (31) bestehender optischer Fühler (31 - 36) zugeordnet ist (Fig.3).7. Device according to one of claims 1 to 4, characterized in that the water flow meter (14 - 19) as a signal generator (20) for the control device (23) with this control device (23) via a control line (22) connected, for example from an optical sensor (31 - 36) existing between a light source (35) and a light receiver (36) is assigned to an existing sensor (31 - 36) (FIG. 3). 8. Vorrichtung nach einem der Ansprüche 1 bis 7, dadurch gekennzeichnet, daß zur Rückführung des Drehzahlreglers (26) ein einem Polrad (27) der Gebläseabtriebswelle zugeordneter Hall-Sensor (28) vorgesehen und mit der Regelvorrichtung (23) über eine Steuerleitung (37) verbunden ist (Fig.1).8. Device according to one of claims 1 to 7, characterized in that for returning the speed controller (26) a pole wheel (27) of the fan output shaft associated Hall sensor (28) is provided and with the control device (23) via a control line (37 ) is connected (Fig.1).
EP89107516A 1988-05-03 1989-04-26 Device for combustion air supply controlling Expired - Lifetime EP0340611B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT89107516T ATE85694T1 (en) 1988-05-03 1989-04-26 DEVICE FOR ADJUSTING THE COMBUSTION AIR SUPPLY.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3814992 1988-05-03
DE3814992 1988-05-03

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EP0340611A2 true EP0340611A2 (en) 1989-11-08
EP0340611A3 EP0340611A3 (en) 1990-12-05
EP0340611B1 EP0340611B1 (en) 1993-02-10

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AT (1) ATE85694T1 (en)
DE (1) DE58903487D1 (en)
ES (1) ES2039738T3 (en)

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GB2400164A (en) * 2003-04-04 2004-10-06 Carver Plc Fluid flow control
US10247446B2 (en) 2007-03-09 2019-04-02 Lochinvar, Llc Control system for modulating water heater

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Publication number Priority date Publication date Assignee Title
WO2006034529A1 (en) * 2004-09-30 2006-04-06 Rheem Australia Pty Limited Improvements to water heater control systems, burner control systems and diffusers for gas burners

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GB979181A (en) * 1961-10-11 1965-01-01 English Electric Co Ltd Improvements in or relating to liquid flowmeters
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Title
PATENT ABSTRACTS OF JAPAN, Band 8, Nr. 258 (M-340)[1695], 27. November 1984; & JP-A-59 129 324 (TATEISHI DENKI K.K.) 25-07-1984 *
PATENT ABSTRACTS OF JAPAN, Band 9, Nr. 98 (M-375)[1871], 27. April 1985; & JP-A-59 221 518 (HANSHIN ELECTRIC K.K.) 13-12-1984 *

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2400164A (en) * 2003-04-04 2004-10-06 Carver Plc Fluid flow control
GB2400164B (en) * 2003-04-04 2006-04-19 Carver Plc Improvements in or relating to fluid control
US10247446B2 (en) 2007-03-09 2019-04-02 Lochinvar, Llc Control system for modulating water heater
US10955169B2 (en) 2007-03-09 2021-03-23 Lochinvar, Llc Control system for modulating water heater

Also Published As

Publication number Publication date
EP0340611A3 (en) 1990-12-05
ES2039738T3 (en) 1993-10-01
EP0340611B1 (en) 1993-02-10
ATE85694T1 (en) 1993-02-15
DE58903487D1 (en) 1993-03-25

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