EP1243857B1 - Fan for combustion air - Google Patents

Fan for combustion air Download PDF

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Publication number
EP1243857B1
EP1243857B1 EP02001432A EP02001432A EP1243857B1 EP 1243857 B1 EP1243857 B1 EP 1243857B1 EP 02001432 A EP02001432 A EP 02001432A EP 02001432 A EP02001432 A EP 02001432A EP 1243857 B1 EP1243857 B1 EP 1243857B1
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EP
European Patent Office
Prior art keywords
fan
air
mass flow
combustion
nozzle arrangement
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
Application number
EP02001432A
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German (de)
French (fr)
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EP1243857A1 (en
Inventor
Rudolf Tungl
Martin Geiger
Reinhold Hopfensperger
Peter Goebel
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Ebm Papst Landshut GmbH
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Ebm Papst Landshut GmbH
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Publication of EP1243857A1 publication Critical patent/EP1243857A1/en
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Classifications

    • 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
    • F23D14/60—Devices for simultaneous control of gas and combustion air
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D29/00—Details, component parts, or accessories
    • F04D29/40—Casings; Connections of working fluid
    • F04D29/42—Casings; Connections of working fluid for radial or helico-centrifugal pumps
    • F04D29/4206—Casings; Connections of working fluid for radial or helico-centrifugal pumps especially adapted for elastic fluid pumps
    • F04D29/4213—Casings; Connections of working fluid for radial or helico-centrifugal pumps especially adapted for elastic fluid pumps suction ports
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D29/00—Details, component parts, or accessories
    • F04D29/40—Casings; Connections of working fluid
    • F04D29/42—Casings; Connections of working fluid for radial or helico-centrifugal pumps
    • F04D29/4206—Casings; Connections of working fluid for radial or helico-centrifugal pumps especially adapted for elastic fluid pumps
    • F04D29/4226—Fan casings
    • 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
    • F23N5/00—Systems for controlling combustion
    • F23N5/18—Systems for controlling combustion using detectors sensitive to rate of flow of air or fuel
    • F23N5/184—Systems for controlling combustion using detectors sensitive to rate of flow of air or fuel using electronic means
    • 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
    • F23N2005/181—Systems for controlling combustion using detectors sensitive to rate of flow of air or fuel using detectors sensitive to rate of flow of air
    • 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
    • F23N2005/185—Systems for controlling combustion using detectors sensitive to rate of flow of air or fuel using detectors sensitive to rate of flow of fuel
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23N—REGULATING OR CONTROLLING COMBUSTION
    • F23N2221/00—Pretreatment or prehandling
    • F23N2221/10—Analysing fuel properties, e.g. density, calorific
    • 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

Definitions

  • the invention relates to a fan for combustion air in one wall / floor standing boiler.
  • blowers are used in Household heating systems with premixing surface burner for Heating either from service water or the heating water.
  • control and the regulation takes place in generally via pneumatically controlled gas valves, however due to their required high control performance to an increased Volume flow of combustion air lead, as he for the actual Power generation is not required.
  • WO 86/04663 is a device for a furnace known, in a burner, the combustion air is supplied via a blower.
  • a blower In front of the blower entrance is a Inlet pipe arranged, in which an auxiliary blower installed is.
  • the auxiliary fan has an additional intake on, in which arranged in the front area a fürmeßme réelle is.
  • the fürschlußmeß réelle is provided with a donor and is connected via a line with a control device in Signal connection.
  • the control device controls one between the Additional blower and the inlet opening provided aperture as well the motor of the additional controller.
  • an oil or gas heated water heater known with a blower, which by means of a drive motor Promotes combustion air to a burner, wherein an inlet nozzle in the air inlet of the blower as a differential pressure generator or differential pressure generator is formed.
  • the differential pressure can be one Actuate pressure switch whose force to monitor the volume of air delivered or to regulate the amount of gas in Serve dependent on the volume of air delivered.
  • the invention is therefore based on the object to a blower create an adequate output according to the desired Power requirement, i. Temperature of the service water or the heating, provides.
  • a fan with a blower housing and an impeller for combustion air in one wall / floor standing boiler proposed that has an air inlet (Suction side) and an air outlet (pressure side) has and with a supply line for a preferably gaseous Combustion medium is equipped, wherein at the air inlet a Sensor device arranged to determine the air mass flow which is operatively connected to an electronic control / regulator unit and to these signals for conditioning the ratio Combustion medium / combustion air depending sends the desired heat output, the sensor device is arranged on a ring nozzle assembly.
  • a device is provided, the one full mixing surface burner by capturing of the air and gas mass flow a homogeneous emission-poor Provides combustion and permanently guaranteed.
  • the sensor device a electronic air mass flow anemometer is.
  • Anemometer has proven itself in a wide variety of measurement areas and provides sufficiently accurate signals to determine the mass flow a gaseous medium.
  • a particularly advantageous embodiment is that the annular nozzle arrangement is formed on the air inlet of the blower is. This particular arrangement for the location of the sensor device allows a trouble-free detection of the mass flow, because at this point a quasi laminar flow and the measured states are homogeneous over the cross-sectional area can be viewed on the suction side.
  • the sensor device is in a Bypass is arranged in the gap of the annular nozzle assembly opens. This will be an optimal mass flow measurement supplied to the sensor device, so that the corresponding Measurement signals an error-free determination of the actual mass flow in the main stream.
  • annular nozzle arrangement may be more integral Part of the housing wall at the air inlet of the blower is. It is favorable that the annular nozzle arrangement surrounds the main flow of combustion air at the air inlet. By this arrangement, a steady homogeneous suction the measuring air flow through the corresponding nozzle gap ensured.
  • the annular nozzle arrangement pre-set an input channel is. It can at a favorable training of the bypass enter the input channel. However, it can also be the bypass into an annular gap in the interior of the inlet channel, so that according to the pressure distribution over the Cross section a uniform intake of the measuring air flow is ensured.
  • a rotary valve / control valve This is an integral part of the blower housing is. It is advantageous if this rotary valve / control valve for the gas supply on the suction side the blower is formed. This can be a rational Production can be achieved.
  • the inventive construction advantageously allows that the electronic engine commutation the mass flow evaluation takes over and depending on the result the evaluation controls the speed of the fan motor.
  • Fig. 1 shows a first embodiment of the invention Blowers for combustion air, as in so-called wall / floor-standing boilers is used. It consists of a fan 1 with a fan housing 2 and a fan 2 ', with an air inlet 3 and an air outlet 4. The air inlet is the suction side of the blower, whereas the air outlet designates the pressure side.
  • a supply line 5 for a preferably gaseous combustion medium educated.
  • a sensor device 6 arranged to determine the air mass flow serves. The sensor device 6 indicates signals a control control unit 7 that controls the combustion, e.g. the ratio combustion medium / combustion air in Depending on the desired heating power setting.
  • the control device 6 consists of an electronic Air mass anemometer, as commercially available is.
  • annular nozzle arrangement 8 is arranged, wherein the sensor device 6 at this annular nozzle assembly 8 is attached.
  • the sensor device 6 is in the in Fig. 1 embodiment arranged in a bypass 9, which is in the gap 10 of the Ringdüsenanordung. 8 opens.
  • the ring nozzle assembly 8 has in the illustrated embodiment in addition to the nozzle gap 10 for air mass measurement another nozzle gap 11 (gas nozzle gap) for the supply of the combustion medium.
  • the corresponding signals in terms of Mass flow of the combustion gas to the control unit 7 sends.
  • the annular nozzle arrangement is an integral part of Housing wall 13 of the blower formed.
  • the Housing wall a part of the ring nozzle for the combustion gas form.
  • the annular nozzle assembly 8 surrounds the main stream of combustion air at the air inlet 3 annular. This will be a homogeneous mixing of the combustion gas with the main air flow achieved.
  • the sensors in separate components in the corresponding Lines or annular nozzle sections are housed, is according to embodiment of FIG. 2, the sensor arrangement designed so that a common partition between the annular nozzle for the air mass flow and the gas flow is formed by a measuring chip, so that a compact measuring unit is obtained.
  • FIG. 3 shows a next embodiment of an inventive Blower training, where an input channel 14 of the annular nozzle assembly 8 is vorstand.
  • the sensor device 6 for the mass air flow arranged in a bypass line, in the Inlet channel 14 opens.
  • a covered annular channel 17th formed in the bypass 9 opens.
  • the Bypass 9 is formed so that its opening substantially is normal on the wall of the input channel 16.
  • a rotary valve / control valve 16 is shown that is controlled by the control / regulating unit 7 becomes.
  • the rotary valve / regulator valve is an integral part of the housing 2. In the illustrated embodiment is this rotary valve / regulator valve 16 for the Gas supply to the suction side of the blower 2 is formed.
  • Fig. 4 Exemplary for all other embodiments is in Fig. 4, the motor 18 of the blower 1 shown, wherein the Control / regulator unit 7 together with the electronic engine commutation the mass flow analysis takes over and As a result, the speed of the fan motor can be controlled can.
  • the control electronics are designed so that either at constant engine speed, the gas supply regulated or it may be at a continuous Soll-IstVerschreib the desired power both the speed of the Adjusted engine and the gas supply in a corresponding manner become.
  • FIG. 5 shows an embodiment according to the invention in side view, in which the gas supply 5 does not have a Ring nozzle at the air inlet, but near the pressure side takes place at the air outlet.
  • the invention is not limited in their execution the preferred embodiments given above. Rather, a number of variants is conceivable, which from the illustrated solution even with fundamentally different makes use of the same type.

Description

Die Erfindung betrifft ein Gebläse für Verbrennungsluft in einem wand/bodenstehenden Heizkessel. Derartige Gebläse dienen in Haushaltsheizungsanlagen mit vormischendem Flächenbrenner zur Erwärmung entweder von Brauchwasser oder dem Heizungswasser.The invention relates to a fan for combustion air in one wall / floor standing boiler. Such blowers are used in Household heating systems with premixing surface burner for Heating either from service water or the heating water.

Im Stand der Technik erfolgt die Steuerung und die Regelung im allgemeinen über pneumatisch angesteuerte Gasventile, die jedoch aufgrund ihrer benötigten hohen Steuerleistung zu einem erhöhten Volumenstrom von Verbrennungsluft führen, wie er für die eigentliche Leistungserzeugung nicht erforderlich ist.In the prior art, the control and the regulation takes place in generally via pneumatically controlled gas valves, however due to their required high control performance to an increased Volume flow of combustion air lead, as he for the actual Power generation is not required.

Aus der WO 86/04663 ist eine Einrichtung für eine Feuerungsanlage bekannt, bei der einem Brenner die Verbrennungsluft über ein Gebläse zugeführt wird. Vor dem Gebläseeingang ist ein Eingangsrohr angeordnet, in welchem ein Zusatzgebläse eingebaut ist. Das Zusatzgebläse weist einen zusätzlichen Ansaugstutzen auf, in welchem im vorderen Bereich ein Durchschlußmeßgerät angeordnet ist. Das Durchschlußmeßgerät ist mit einem Geber versehen und steht über eine Leitung mit einer Regeleinrichtung in Signalverbindung. Die Regeleinrichtung steuert eine zwischen dem Zusatzgebläse und der Einlauföffnung versehene Blende wie auch den Motor des Zusatzreglers.From WO 86/04663 is a device for a furnace known, in a burner, the combustion air is supplied via a blower. In front of the blower entrance is a Inlet pipe arranged, in which an auxiliary blower installed is. The auxiliary fan has an additional intake on, in which arranged in the front area a Durchmeßmegerät is. The Durchschlußmeßgerät is provided with a donor and is connected via a line with a control device in Signal connection. The control device controls one between the Additional blower and the inlet opening provided aperture as well the motor of the additional controller.

Aus der DE 2 258 558 ist ein öl- oder gasbeheizter Wassererhitzer mit einem Gebläse bekannt, welches mittels eines Antriebsmotors Verbrennungsluft zu einem Brenner fördert, wobei eine Einströmdüse im Lufteinlaß des Gebläses als Differenzdruckerzeuger bzw. Wirkdruckgeber ausgebildet ist. Der Differenzdruck kann einen Druckschalter beaufschlagen, dessen Stellkraft zum Überwachen der geförderten Luftmenge oder zum Regeln der Gasmenge in Abhängigkeit von der geförderten Luftmenge dienen kann.From DE 2 258 558 an oil or gas heated water heater known with a blower, which by means of a drive motor Promotes combustion air to a burner, wherein an inlet nozzle in the air inlet of the blower as a differential pressure generator or differential pressure generator is formed. The differential pressure can be one Actuate pressure switch whose force to monitor the volume of air delivered or to regulate the amount of gas in Serve dependent on the volume of air delivered.

Der Erfindung liegt deshalb die Aufgabe zugrunde, ein Gebläse zu schaffen, das eine adäquate Leistungsabgabe entsprechend der gewünschten Leistungsanforderung, d.h. Temperatur des Brauchwassers bzw. der Heizung, bereitstellt.The invention is therefore based on the object to a blower create an adequate output according to the desired Power requirement, i. Temperature of the service water or the heating, provides.

Als Lösung dieser Aufgabe wird ein Gebläse mit einem Gebläsegehäuse und einem Gebläserad für Verbrennungsluft in einem wand/bodenstehenden Heizkessel vorgeschlagen, das einen Lufteinlass (Ansaugseite) und einen Luftauslass (Druckseite) aufweist und das mit einer Zuleitung für ein vorzugsweise gasförmiges Verbrennungsmedium ausgestattet ist, wobei am Lufteinlass eine Sensoreinrichtung zum Ermitteln des Luft-Massenstroms angeordnet ist, die mit einer elektronischen Steuer/Reglereinheit funktionsverbunden ist und zu dieser Signale zur Aufbereitung des Verhältnisses Verbrennungsmedium/Verbrennungsluft in Abhängigkeit von der gewünschten Heizleistung sendet, wobei die Sensoreinrichtung an einer Ringdüsenanordnung angeordnet ist.As a solution to this problem, a fan with a blower housing and an impeller for combustion air in one wall / floor standing boiler proposed that has an air inlet (Suction side) and an air outlet (pressure side) has and with a supply line for a preferably gaseous Combustion medium is equipped, wherein at the air inlet a Sensor device arranged to determine the air mass flow which is operatively connected to an electronic control / regulator unit and to these signals for conditioning the ratio Combustion medium / combustion air depending sends the desired heat output, the sensor device is arranged on a ring nozzle assembly.

Mit einem derartigen Gebläse wird eine Vorrichtung bereitgestellt, die einem vollmischenden Flächenbrenner durch die Erfassung des Luft- und Gasmassenstroms eine homogene emissionsarme Verbrennung bereitstellt und dauernd gewährleistet. With such a fan, a device is provided, the one full mixing surface burner by capturing of the air and gas mass flow a homogeneous emission-poor Provides combustion and permanently guaranteed.

Durch die Kombination des Gebläses mit einer Zuleitung für das gasförmige Verbrennungsmedium wird eine kompakte Baueinheit bereitgestellt, die den Montageaufwand bei der Herstellung des Kessels erheblich reduziert. Durch die Erfassung des Massenstroms der Verbrennungsluft und/oder dem Massenstrom des Verbrennungsmediums unmittelbar am Lufteinlass erhält man für die Steuerung und Regelung notwendige Istwerte ohne Störeinwirkung, so dass die Regelung des Mischungsverhältnisses eine genaue Einstellung erlaubt und eine emissionsarme Verbrennung bereitgestellt werden.By combining the blower with a supply line for the gaseous combustion medium is provided a compact unit, the installation effort in the production of the Boiler considerably reduced. By detecting the mass flow the combustion air and / or the mass flow of the combustion medium directly at the air intake one receives for the Control and regulation necessary actual values without interference, so that the control of the mixing ratio accurate adjustment allowed and provided a low-emission combustion become.

Von besonderem Vorteil ist es, wenn die Sensoreinrichtung ein elektronisches Luftmassenstrom-Anemometer ist. Ein derartiges Anemometer hat sich auf den verschiedensten Messgebieten bewährt und liefert hinreichend genaue Signale zur Ermittlung des Massenstroms eines gasförmigen Mediums.It is particularly advantageous if the sensor device a electronic air mass flow anemometer is. Such a thing Anemometer has proven itself in a wide variety of measurement areas and provides sufficiently accurate signals to determine the mass flow a gaseous medium.

Eine besonders vorteilhafte Ausgestaltung besteht darin, dass die Ringdüsenanordnung an dem Lufteinlass des Gebläses ausgebildet ist. Diese besondere Anordnung für den Ort der Sensoreinrichtung ermöglicht ein störungsfreies Erfassen des Massenstroms, da an dieser Stelle eine quasi laminare Strömung herrscht und die gemessenen Zustände als homogen über die Querschnittsfläche an der Saugseite angesehen werden können.A particularly advantageous embodiment is that the annular nozzle arrangement is formed on the air inlet of the blower is. This particular arrangement for the location of the sensor device allows a trouble-free detection of the mass flow, because at this point a quasi laminar flow and the measured states are homogeneous over the cross-sectional area can be viewed on the suction side.

Besonders vorteilhaft ist es, wenn die Sensoreinrichtung in einem Bypass angeordnet ist, der in den Spalt der Ringdüsenanordnung einmündet. Hierdurch wird ein optimaler Mess-Massenstrom der Sensoreinrichtung zugeführt, so dass die entsprechenden Messsignale eine fehlerfreie Ermittlung des tatsächlichen Massenstroms im Hauptstrom ergeben.It is particularly advantageous if the sensor device is in a Bypass is arranged in the gap of the annular nozzle assembly opens. This will be an optimal mass flow measurement supplied to the sensor device, so that the corresponding Measurement signals an error-free determination of the actual mass flow in the main stream.

Bei einer für sich ebenfalls erfinderischen Weiterbildung der Erfindung weist die Ringdüsenanordnung zusätzlich zu dem Düsenspalt für die Luftmassenmessung einen weiteren Düsenspalt für die Zuführung des Verbrennungsmediums auf. Diese besondere Ausbildung ermöglicht eine sehr homogene Vermischung des Verbrennungsmediums mit der Verbrennungsluft.In a likewise inventive development of the Invention includes the annular nozzle assembly in addition to the die clearance for the air mass measurement another nozzle gap for the supply of the combustion medium. This special training allows a very homogeneous Mixing of the combustion medium with the combustion air.

Dabei kann es günstig sein, dass im Bereich des Gasdüsenspalts eine weitere Sensoreinrichtung angeordnet ist, die entsprechende Signale an die Steuer/Reglereinheit abgibt. Hierdurch wird es ermöglicht, unabhängig von gerätefest eingestellten Werten des Verbrennungsgases optimale Verbrennungsbedingungen zu schaffen.It may be favorable that in the area of the gas nozzle gap a further sensor device is arranged, the sends corresponding signals to the control / regulator unit. This makes it possible, regardless of device-fixed set values of the combustion gas optimal combustion conditions to accomplish.

Von Vorteil kann es sein, dass die Ringdüsenanordnung integraler Bestandteil der Gehäusewand am Lufteinlass des Gebläses ist. Dabei ist es günstig, dass die Ringdüsenanordnung den Hauptstrom der Verbrennungsluft am Lufteinlass umringt. Durch diese Anordnung wird eine stetige homogene Ansaugung des Mess-Luftstroms durch den entsprechenden Düsenspalt sichergestellt.It may be advantageous for the annular nozzle arrangement to be more integral Part of the housing wall at the air inlet of the blower is. It is favorable that the annular nozzle arrangement surrounds the main flow of combustion air at the air inlet. By this arrangement, a steady homogeneous suction the measuring air flow through the corresponding nozzle gap ensured.

Bei einer anderen Ausführungsform kann es günstig sein, dass der Ringdüsenanordnung ein Eingangskanal vorgesetzt ist. Dabei kann bei einer günstigen Ausbildung der Bypass in den Eingangskanal einmünden. Es kann jedoch auch der Bypass in einen Ringspalt im Inneren des Eingangskanals einmünden, so dass entsprechend der Druckverteilung über den Querschnitt eine gleichmäßige Ansaugung des Mess-Luftstroms sichergestellt ist.In another embodiment, it may be convenient that the annular nozzle arrangement pre-set an input channel is. It can at a favorable training of the bypass enter the input channel. However, it can also be the bypass into an annular gap in the interior of the inlet channel, so that according to the pressure distribution over the Cross section a uniform intake of the measuring air flow is ensured.

Bei einer weiteren Ausführungsform kann es günstig sein, dass die Gaszufuhr über ein Drehschieber/Regelventil gesteuert wird, das ein integraler Bestandteil des Gebläsegehäuses ist. Dabei ist es vorteilhaft, wenn dieses Drehschieber/Regelventil für die Gaszufuhr auf der Saugseite des Gebläses ausgebildet ist. Hierdurch kann eine rationelle Fertigung erzielt werden.In another embodiment, it may be convenient that controlled the gas supply via a rotary valve / control valve This is an integral part of the blower housing is. It is advantageous if this rotary valve / control valve for the gas supply on the suction side the blower is formed. This can be a rational Production can be achieved.

Die erfindungsgemäße Ausbildung gestattet es vorteilhafterweise, dass die elektronische Motorkommutierung die Massenstromauswertung übernimmt und in Abhängigkeit von dem Ergebnis der Auswertung die Drehzahl des Gebläsemotors regelt.The inventive construction advantageously allows that the electronic engine commutation the mass flow evaluation takes over and depending on the result the evaluation controls the speed of the fan motor.

Von besonderem Vorteil ist es, wenn die elektronische Motorkommutierung die Massenstromauswertung übernimmt und sowohl die Drehzahl des Gebläsemotors als auch die Gaszufuhr regelt.It is particularly advantageous if the electronic engine commutation the mass flow analysis takes over and both the speed of the fan motor as well as the gas supply regulates.

Weitere Merkmale der Erfindung gehen aus den in den Figuren dargestellten und nachfolgend im einzelnen beschriebenen Ausführungsbeispielen hervor.Further features of the invention will become apparent from the figures shown and described in detail below Exemplary embodiments.

In den Figuren zeigen:

  • Fig. 1 eine schematische Schnittdarstellung eines ersten Ausführungsbeispiels eines erfindungsgemäßen Gebläses,
  • Fig. 2 ein zweites Ausführungsbeispiel eines erfindungsgemäßen Gebläses,
  • Fig. 3 ein drittes Ausführungsbeispiel eines erfindungsgemäßen Gebläses,
  • Fig. 4 ein viertes Ausführungsbeispiel eines erfindungsgemäßen Gebläses,
  • Fig. 5 eine schematische Draufsicht auf ein erfindungsgemäßes Gebläse mit einer Gaszufuhr am Luftauslass.
    • In the figures show:
  • 1 is a schematic sectional view of a first embodiment of a blower according to the invention,
  • 2 shows a second embodiment of a blower according to the invention,
  • 3 shows a third embodiment of a blower according to the invention,
  • 4 shows a fourth embodiment of a blower according to the invention,
  • Fig. 5 is a schematic plan view of an inventive fan with a gas supply at the air outlet.

    • Fig. 1 zeigt ein erstes Ausführungsbeispiel des erfindungsgemäßen Gebläses für Verbrennungsluft, wie es in sogenannten wand/bodenstehenden Heizkesseln zum Einsatz gelangt. Es besteht aus einem Gebläse 1 mit einem Lüftergehäuse 2 und einem Lüfterrad 2', mit einem Lufteinlass 3 und einem Luftauslass 4. Der Lufteinlass ist die Ansaugseite des Gebläses, wohingegen der Luftauslass die Druckseite bezeichnet. In dem erfindungsgemäßen Ausführungsbeispiel gemäß Fig. 1 ist eine Zuleitung 5 für eine vorzugsweise gasförmiges Verbrennungsmedium ausgebildet. Am Lufteinlass 3 ist eine Sensoreinrichtung 6 angeordnet, die zum Ermitteln des Luftmassenstroms dient. Die Sensoreinrichtung 6 gibt Signale an eine Steuerregeleinheit 7, die die Verbrennung steuert, z.B. das Verhältnis Verbrennungsmedium /Verbrennungsluft in Abhängigkeit von der gewünschten Heizleistung einstellt.Fig. 1 shows a first embodiment of the invention Blowers for combustion air, as in so-called wall / floor-standing boilers is used. It consists of a fan 1 with a fan housing 2 and a fan 2 ', with an air inlet 3 and an air outlet 4. The air inlet is the suction side of the blower, whereas the air outlet designates the pressure side. In the embodiment of the invention shown in FIG. 1 is a supply line 5 for a preferably gaseous combustion medium educated. At the air inlet 3 is a sensor device 6 arranged to determine the air mass flow serves. The sensor device 6 indicates signals a control control unit 7 that controls the combustion, e.g. the ratio combustion medium / combustion air in Depending on the desired heating power setting.

    Die Steuereinrichtung 6 besteht aus einem elektronischen Luftmassenstrom Anemometer, wie es handelsüblich zu erwerben ist.The control device 6 consists of an electronic Air mass anemometer, as commercially available is.

    Am Lufteinlass 3 ist eine Ringdüsenanordnung 8 angeordnet, wobei die Sensoreinrichtung 6 an dieser Ringdüsenanordnung 8 befestigt ist. Die Sensoreinrichtung 6 ist in dem in Fig. 1 dargestellten Ausführungsbeispiel in einem Bypass 9 angeordnet, der sich in den Spalt 10 der Ringdüsenanordung 8 öffnet.At the air inlet 3, an annular nozzle arrangement 8 is arranged, wherein the sensor device 6 at this annular nozzle assembly 8 is attached. The sensor device 6 is in the in Fig. 1 embodiment arranged in a bypass 9, which is in the gap 10 of the Ringdüsenanordung. 8 opens.

    Die Ringdüsenanordnung 8 weist bei dem dargestellten Ausführungsbeispiel zusätzlich zum Düsenspalt 10 für die Luftmassenmessung einen weiteren Düsenspalt 11 (Gasdüsenspalt) für die Zuführung des Verbrennungsmediums auf.The ring nozzle assembly 8 has in the illustrated embodiment in addition to the nozzle gap 10 for air mass measurement another nozzle gap 11 (gas nozzle gap) for the supply of the combustion medium.

    In dem Gasdüsenspalt 11 ist eine weitere Sensoreinrichtung 12 ausgebildet, die entsprechende Signale hinsichtlich des Massenstroms des Verbrennungsgases an die Steuerreglereinheit 7 sendet.In the gas nozzle gap 11 is another sensor device 12 formed, the corresponding signals in terms of Mass flow of the combustion gas to the control unit 7 sends.

    Aus den Signalen des Luftmassenstroms und denjenigen des Gasmassenstroms errechnet die Steuerreglereinheit die entsprechenden Stellgrößen, um die jeweiligen Soll-Werte zu erreichen, wenn diese von den Ist-Werten abweichen.From the signals of the air mass flow and those of the Gas mass flow calculated by the control unit the corresponding Manipulated variables to the respective target values reach, if these deviate from the actual values.

    Die Ringdüsenanordnung ist als integraler Bestandteil der Gehäusewand 13 des Gebläses ausgebildet. Hierbei kann die Gehäusewand einen Teil der Ringdüse für das Verbrennungsgas bilden.The annular nozzle arrangement is an integral part of Housing wall 13 of the blower formed. Here, the Housing wall a part of the ring nozzle for the combustion gas form.

    Die Ringdüsenanordnung 8 umgibt den Hauptstrom der Verbrennungsluft am Lufteinlass 3 ringförmig. Hierdurch wird eine homogene Vermischung des Verbrennungsgases mit dem Hauptluftstrom erzielt.The annular nozzle assembly 8 surrounds the main stream of combustion air at the air inlet 3 annular. This will be a homogeneous mixing of the combustion gas with the main air flow achieved.

    Während bei dem Ausführungsbeispiel gemäß Fig. 1 die Sensoren in voneinander getrennten Bauteilen in den entsprechenden Leitungen bzw. Ringdüsenabschnitten untergebracht sind, ist gemäß Ausführungsbeispiel nach Fig. 2 die Sensoranordnung so ausgebildet, daß eine gemeinsame Trennwand zwischen der Ringdüse für den Luftmassenmesstrom und dem Gasstrom von einem Messchip gebildet wird, so daß eine kompakte Messeinheit erhalten wird.While in the embodiment of FIG. 1, the sensors in separate components in the corresponding Lines or annular nozzle sections are housed, is according to embodiment of FIG. 2, the sensor arrangement designed so that a common partition between the annular nozzle for the air mass flow and the gas flow is formed by a measuring chip, so that a compact measuring unit is obtained.

    Fig. 3 zeigt ein nächstes Ausführungsbeispiel einer erfindungsgemäßen Gebläseausbildung, bei der ein Eingangskanal 14 der Ringdüsenanordnung 8 vorangesetzt ist. Bei dieser Ausführungsform ist die Sensoreinrichtung 6 für den Luftmassenstrom in einer Bypassleitung angeordnet, der in den Eingangskanal 14 einmündet. Im Inneren des Eingangskanal 14 ist vor einem Ringspalt 15 ein abgedeckter Ringkanal 17 ausgebildet in den der Bypass 9 einmündet. Durch ringförmige Ansaugung wird eine homogene Ansaugung des Massenstrommessvolumens durch den Bypass 9 hindurch erzielt.Fig. 3 shows a next embodiment of an inventive Blower training, where an input channel 14 of the annular nozzle assembly 8 is vorgesetzt. At this Embodiment is the sensor device 6 for the mass air flow arranged in a bypass line, in the Inlet channel 14 opens. Inside the input channel 14th is in front of an annular gap 15 a covered annular channel 17th formed in the bypass 9 opens. By annular Intake becomes a homogeneous intake of the mass flow measuring volume achieved through the bypass 9 through.

    Bei dem in Fig. 4 dargestellten Ausführungsbeispiel ist der Bypass 9 so ausgebildet, daß seine Öffnung im wesentlichen normal auf der Wand des Eingangskanal 16 steht.In the embodiment shown in Fig. 4 is the Bypass 9 is formed so that its opening substantially is normal on the wall of the input channel 16.

    In Fig. 4 ist beispielhaft für alle anderen Ausführungsvarianten anwendbar ein Drehschieber/Regelventil 16 dargestellt, das von der Steuer/Reglereinheit 7 angesteuert wird. Das Drehschieber/Reglerventil ist ein integraler Bestandteil des Gehäuses 2. Bei der dargestellten Ausführungsform ist dieses Drehschieber/Reglerventil 16 für die Gaszufuhr an der Saugseite des Gebläses 2 ausgebildet.In Fig. 4 is exemplary of all other embodiments applicable a rotary valve / control valve 16 is shown that is controlled by the control / regulating unit 7 becomes. The rotary valve / regulator valve is an integral part of the housing 2. In the illustrated embodiment is this rotary valve / regulator valve 16 for the Gas supply to the suction side of the blower 2 is formed.

    Beispielhaft auch für alle anderen Ausführungsformen ist in Fig. 4 der Motor 18 des Gebläses 1 dargestellt, wobei die Steuer/Reglereinheit 7 zusammen mit der elektronischen Motorkommutierung die Massenstromauswertung übernimmt und hierdurch die Drehzahl des Gebläsemotors geregelt werden kann. Die Steuerelektronik ist so ausgelegt, daß entweder bei konstanter Drehzahl des Motors die Gaszufuhr eingeregelt wird oder es kann bei einem kontinuierlichen Soll-IstVergleich der gewünschten Leistung sowohl die Drehzahl des Motors als auch die Gaszufuhr in entsprechender Weise eingeregelt werden.Exemplary for all other embodiments is in Fig. 4, the motor 18 of the blower 1 shown, wherein the Control / regulator unit 7 together with the electronic engine commutation the mass flow analysis takes over and As a result, the speed of the fan motor can be controlled can. The control electronics are designed so that either at constant engine speed, the gas supply regulated or it may be at a continuous Soll-IstVergleich the desired power both the speed of the Adjusted engine and the gas supply in a corresponding manner become.

    Fig. 5 zeigt eine erfindungsgemäße Ausführungsform in Seitenansicht, bei der die Gaszuführung 5 nicht über eine Ringdüse am Lufteinlass, sondern in der Nähe der Druckseite am Luftauslass stattfindet. 5 shows an embodiment according to the invention in side view, in which the gas supply 5 does not have a Ring nozzle at the air inlet, but near the pressure side takes place at the air outlet.

    Die Erfindung beschränkt sich in ihrer Ausführung nicht auf die vorstehend angegebenen bevorzugten Ausführungsbeispiele. Vielmehr ist eine Anzahl von Varianten denkbar, welche von der dargestellten Lösung auch bei grundsätzlich anders gearteten Ausführungen Gebrauch macht.The invention is not limited in their execution the preferred embodiments given above. Rather, a number of variants is conceivable, which from the illustrated solution even with fundamentally different makes use of the same type.

    Claims (15)

    1. A fan (1) for combustion air in a wall-mounted/floor-standing heating boiler, with a fan casing (2) and a fan wheel (2'), with an air intake (3) (inlet side) and an air exit (4) (delivery side) and with a supply line (5) for a preferably gaseous combustion medium, wherein to determine the air mass flow rate a sensor means (6) is located at the air intake (3) which is operably linked with an electronic control unit/controller (7) and to said unit sends signals for processing the ratio of combustion medium/combustion air depending on the desired calorific output, wherein the sensor means (6) is formed at a ring nozzle arrangement (8).
    2. A fan as claimed in claim 1, characterized in that the sensor means (6) is an electronic air mass flow anemometer.
    3. A fan as claimed in claim 1 or 2, characterized in that the ring nozzle arrangement (8) is formed at the air intake (3).
    4. A fan as claimed in one of the claims 1 to 3, characterized in that the sensor means (6) is formed in a bypass (9) which opens into the gap (10) of the ring nozzle arrangement (8).
    5. A fan as claimed in one of the claims 3 or 4, characterized in that the ring nozzle arrangement (8) has an additional nozzle gap (11) (gas nozzle gap) for the supply of the combustion medium in addition to the nozzle gap (10) for the air mass flow measurement.
    6. A fan as claimed in claim 5, characterized in that in the area of the gas nozzle gap (11) another sensor means (12) is provided which delivers the corresponding signals to the control unit/controller (7).
    7. A fan as claimed in one of the claims 3 to 6, characterized in that the ring nozzle arrangement (8) is an integral part of the casing wall (13) at the air intake (3) of the fan (2).
    8. A fan as claimed in one of the claims 3 to 6, characterized in that the ring nozzle arrangement (3) surrounds the main combustion air stream at the air intake (3).
    9. A fan as claimed in one of the claims 1 to 8, characterized in that an intake duct (14) is placed before the ring nozzle arrangement (8).
    10. A fan as claimed in one of the claims 1 or 9, characterized in that the bypass (9) opens into the entry duct (14).
    11. A fan as claimed in one of the claims 9 or 10, characterized in that the bypass (9) opens into an annular gap (15) inside the entry duct (14).
    12. A fan as claimed in one of the claims 1 or 11, characterized in that a rotary valve/control valve (16) for the gas supply is an integral part of the casing (2).
    13. A fan as claimed in claim 12, characterized in that the rotary valve/control valve (16) for the gas supply is located on the intake side of the fan (2).
    14. A fan as claimed in one of the claims 1 or 13, characterized in that the electronic motor commutation assumes the mass flow evaluation and controls the speed of the fan motor.
    15. A fan as claimed in one of the claims 1 or 13, characterized in that the electronic motor commutation assumes the mass flow evaluation and controls the speed of the fan motor and the gas supply.
    EP02001432A 2001-03-23 2002-01-21 Fan for combustion air Expired - Lifetime EP1243857B1 (en)

    Applications Claiming Priority (2)

    Application Number Priority Date Filing Date Title
    DE10114405 2001-03-23
    DE10114405A DE10114405B4 (en) 2001-03-23 2001-03-23 Blower for combustion air

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    EP1243857A1 EP1243857A1 (en) 2002-09-25
    EP1243857B1 true EP1243857B1 (en) 2005-12-14

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    US8839815B2 (en) 2011-12-15 2014-09-23 Honeywell International Inc. Gas valve with electronic cycle counter
    US8899264B2 (en) 2011-12-15 2014-12-02 Honeywell International Inc. Gas valve with electronic proof of closure system
    US8905063B2 (en) 2011-12-15 2014-12-09 Honeywell International Inc. Gas valve with fuel rate monitor
    US8947242B2 (en) 2011-12-15 2015-02-03 Honeywell International Inc. Gas valve with valve leakage test
    US9074770B2 (en) 2011-12-15 2015-07-07 Honeywell International Inc. Gas valve with electronic valve proving system
    US9234661B2 (en) 2012-09-15 2016-01-12 Honeywell International Inc. Burner control system
    US9557059B2 (en) 2011-12-15 2017-01-31 Honeywell International Inc Gas valve with communication link
    US9995486B2 (en) 2011-12-15 2018-06-12 Honeywell International Inc. Gas valve with high/low gas pressure detection
    US10024439B2 (en) 2013-12-16 2018-07-17 Honeywell International Inc. Valve over-travel mechanism
    US10203049B2 (en) 2014-09-17 2019-02-12 Honeywell International Inc. Gas valve with electronic health monitoring
    US10215291B2 (en) 2013-10-29 2019-02-26 Honeywell International Inc. Regulating device
    US10564062B2 (en) 2016-10-19 2020-02-18 Honeywell International Inc. Human-machine interface for gas valve
    US10697815B2 (en) 2018-06-09 2020-06-30 Honeywell International Inc. System and methods for mitigating condensation in a sensor module
    US10851993B2 (en) 2011-12-15 2020-12-01 Honeywell International Inc. Gas valve with overpressure diagnostics
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    DE102011102984A1 (en) * 2011-05-23 2012-11-29 Ernst Pennekamp Gmbh & Co. Ohg Apparatus for heating furnace installations for goods, in particular for glassware, and furnace installation provided therewith
    US9995486B2 (en) 2011-12-15 2018-06-12 Honeywell International Inc. Gas valve with high/low gas pressure detection
    US8839815B2 (en) 2011-12-15 2014-09-23 Honeywell International Inc. Gas valve with electronic cycle counter
    US8905063B2 (en) 2011-12-15 2014-12-09 Honeywell International Inc. Gas valve with fuel rate monitor
    US8947242B2 (en) 2011-12-15 2015-02-03 Honeywell International Inc. Gas valve with valve leakage test
    US10851993B2 (en) 2011-12-15 2020-12-01 Honeywell International Inc. Gas valve with overpressure diagnostics
    US8899264B2 (en) 2011-12-15 2014-12-02 Honeywell International Inc. Gas valve with electronic proof of closure system
    US9557059B2 (en) 2011-12-15 2017-01-31 Honeywell International Inc Gas valve with communication link
    US9074770B2 (en) 2011-12-15 2015-07-07 Honeywell International Inc. Gas valve with electronic valve proving system
    US10697632B2 (en) 2011-12-15 2020-06-30 Honeywell International Inc. Gas valve with communication link
    US9234661B2 (en) 2012-09-15 2016-01-12 Honeywell International Inc. Burner control system
    US10215291B2 (en) 2013-10-29 2019-02-26 Honeywell International Inc. Regulating device
    US10024439B2 (en) 2013-12-16 2018-07-17 Honeywell International Inc. Valve over-travel mechanism
    US10203049B2 (en) 2014-09-17 2019-02-12 Honeywell International Inc. Gas valve with electronic health monitoring
    US10564062B2 (en) 2016-10-19 2020-02-18 Honeywell International Inc. Human-machine interface for gas valve
    US11073281B2 (en) 2017-12-29 2021-07-27 Honeywell International Inc. Closed-loop programming and control of a combustion appliance
    US10697815B2 (en) 2018-06-09 2020-06-30 Honeywell International Inc. System and methods for mitigating condensation in a sensor module

    Also Published As

    Publication number Publication date
    CN100464124C (en) 2009-02-25
    EP1243857A1 (en) 2002-09-25
    DE10114405B4 (en) 2011-03-24
    CN1737428A (en) 2006-02-22
    DE10114405A1 (en) 2002-09-26

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