EP2048439B1 - Ventilator with integrated control valve - Google Patents

Ventilator with integrated control valve Download PDF

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Publication number
EP2048439B1
EP2048439B1 EP20070020007 EP07020007A EP2048439B1 EP 2048439 B1 EP2048439 B1 EP 2048439B1 EP 20070020007 EP20070020007 EP 20070020007 EP 07020007 A EP07020007 A EP 07020007A EP 2048439 B1 EP2048439 B1 EP 2048439B1
Authority
EP
European Patent Office
Prior art keywords
radial fan
housing
fan according
gas
valve
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.)
Not-in-force
Application number
EP20070020007
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German (de)
French (fr)
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EP2048439A1 (en
Inventor
Manfred Seebauer
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.)
Ebm Papst Landshut GmbH
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Ebm Papst Landshut GmbH
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority to EP20070020007 priority Critical patent/EP2048439B1/en
Application filed by Ebm Papst Landshut GmbH filed Critical Ebm Papst Landshut GmbH
Priority to CA 2699809 priority patent/CA2699809A1/en
Priority to PCT/EP2008/005322 priority patent/WO2009049694A1/en
Priority to CN2008801115062A priority patent/CN101802498B/en
Priority to US12/682,654 priority patent/US8596957B2/en
Priority to KR1020107007331A priority patent/KR20100069665A/en
Priority to JP2010528280A priority patent/JP5538228B2/en
Publication of EP2048439A1 publication Critical patent/EP2048439A1/en
Application granted granted Critical
Publication of EP2048439B1 publication Critical patent/EP2048439B1/en
Not-in-force legal-status Critical Current
Anticipated expiration legal-status Critical

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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
    • F23D14/34—Burners specially adapted for use with means for pressurising the gaseous fuel or the combustion air
    • F23D14/36—Burners specially adapted for use with means for pressurising the gaseous fuel or the combustion air in which the compressor and burner form a single unit
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23D—BURNERS
    • F23D14/00—Burners for combustion of a gas, e.g. of a gas stored under pressure as a liquid
    • F23D14/46—Details, e.g. noise reduction means
    • F23D14/62—Mixing devices; Mixing tubes
    • 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
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T137/00—Fluid handling
    • Y10T137/8593—Systems
    • Y10T137/85978—With pump
    • Y10T137/85986—Pumped fluid control

Definitions

  • the invention relates to a fan, in particular for a gas burner, for premixing of air and gas, which has a housing, and with a control valve for regulating the amount of gas, which comprises a valve seat, wherein the valve seat of the control valve is formed from a part of the housing.
  • gas combi regulators are commonly used which provide both the prescribed safety valves for shutting off the gas path upon termination a heat demand or flame failure of the gas burner as well as the control valve needed to control the amount of gas.
  • the gas combi regulators are often arranged upstream of the blower as an extra assembly, with the gas combi regulator providing a connection to the blower which mixes the sucked air with the supplied gas and supplies it to the gas burner.
  • a mixing device for fan-assisted gas burner wherein the fan and the gas-combi controller are housed in a common housing.
  • the advantage is achieved that the mixing of the amount of gas required for combustion takes place directly on the impeller.
  • a disadvantage of this design is that at least the gas-conducting region of the common housing must be gas-tight in accordance with the EN161 standard.
  • the casings of gas blowers are made of die cast.
  • a production of a gas-tight die-cast housing is possible only with additional costly effort.
  • a seal should additionally be provided for the housing, that certainly no gas can escape.
  • blower and gas combination controller in a housing leads to complex manufacturing and test procedures.
  • solution disclosed by the prior art has significant disadvantages, since in case of failure of the fan, the gas combination regulator must also be replaced with. Accordingly, if the gas-combi regulator fails, the fan must also be replaced. This also leads to high costs in both cases.
  • a mixing device for generating a mixture of gas and combustion air for a burner is known.
  • Such a mixing device is further from the DE 10 2004 007 123 B3 disclosed.
  • gas is introduced into a mixing chamber through which the air flow of an externally arranged blower flows.
  • the mixing and mixing of the gas takes place either through an annular gap, or through a Venturi nozzle.
  • the indicated shown mixing devices are provided as additional components in addition to the gas burner and the blower and ensures a good mixing in the desired gas / air ratio.
  • a disadvantage of the shown mixing devices is that for the mixing of air and gas, an additional component must be provided by means of the gas and combustion air to mix in the right proportion, this is on the one hand a large amount of space needed, on the other hand by appropriate additional components such a mixing chamber generates additional costs. Also, at a large distance or a large volume up to the gas burner, a long dead time arise. Dead time in this case means the time until after a Cityae the plant the gas heater enough gas is supplied from the gas line.
  • a blower for combustion air is disclosed, which is designed to be arranged at the air inlet sensor means for determining the air mass flow, which is operatively connected to an electronic control unit and to these signals for processing the ratio of combustion medium / combustion air as a function of the desired Heating power sends.
  • the WO 2008/165030 A2 discloses a gas valve with control and safety valve wherein the valve seat of the safety valve is formed on the gas valve housing.
  • the invention is therefore based on the object to provide a fan with a short dead time, which has a small size and is inexpensive to manufacture.
  • the object is achieved by a blower with the features of claim 1.
  • the erfiridungssiee blower has a housing with a gas supply and a control valve for controlling the amount of gas.
  • the control valve comprises a valve seat, which is formed from a part of the housing. This advantageously ensures that the dead time is very short until the desired amount of gas is fed in and the overall height of the overall construction is significantly reduced.
  • the control valve itself does not have to ensure gas tightness. A fuse against gas leakage can be ensured only by one or more safety devices outside the housing or on the outside of the housing of the blower.
  • valve seat may also be formed in the interior of the housing or on the outer surface of the housing.
  • gas safety valves that meet the above-mentioned standards as a safety device against gas leakage.
  • one or more of these valves may be provided.
  • control valve may have a valve seat and a valve body.
  • a valve body a valve cone can be used, which cooperates with the corresponding valve seat.
  • the valve seat may in this case be designed, for example, as a funnel-shaped depression with a centrally arranged passage opening.
  • the housing is advantageously produced as a die-cast part, wherein the formation of the valve seat on the housing in the casting process, preferably without machining, is produced. Since there is no requirement for gas tightness on the valve seat, die casting quality is sufficient for the surface. Additional post-processing steps can thus be omitted.
  • control valve has a control device, by means of which the valve body is movable relative to the valve seat.
  • this offers a stepper motor for the control device.
  • valve seat As a favorable embodiment can be provided to form an inflow between the control device and the valve seat, which may have a gas outlet to the Radialgebläserad out.
  • the valve body In the inflow space, the valve body can move axially and thus determine the degree of opening of the control valve. Due to the advantageous arrangement of the control valve with valve seat directly to the housing only very short flow paths of the gas are traversed and via the inflow space, the gas can be introduced directly to the impeller for mixing with the air.
  • the opening position of the control valve is preset in a ready position of the blower for a subsequent operating phase.
  • an optimization of the ignition behavior for the next start-up of the gas burner is particularly favorable since it can thus be ensured that the commissioning of the gas burner following the standby position takes place under optimum ignition conditions.
  • this can be of particular importance, since their ignition range is much smaller than that of atmospheric burners.
  • control device of the control valve it is also possible for the control device of the control valve to be arranged on the outside of the housing in a split tube or in an additional protective housing fastened to the outside of the housing and sealed against gas leakage.
  • the protective housing can either be formed as the housing of a die-cast or even a casting or plastic.
  • control device can be controlled electronically via a BUS. It is particularly advantageous that the BUS gas burner for data transmission for the fan and the stepper motor is used. It is also advantageous that the control of the fan and a control or regulation of the control valve via a single circuit board is executable.
  • the microcomputer receives the commands for the control device (stepper motor) via the BUS, whereby the electronics are controlled.
  • control device can be fixed to the housing without additional fastening means. It is favorable that a simple installation without additional fasteners such as screws favorable that a simple assembly without additional fasteners such as screws or the like can be performed.
  • the gas supply can be arranged directly on the gas safety valve or the gas safety valves.
  • a radial fan 1 for a gas burner for premixing of air and gas is shown in a partially broken side view.
  • the housing 2 of the radial fan 1 is preferably made of die-cast and formed by two enclosing a housing interior complementary cover. Inside the housing, a radial fan wheel is arranged, which sucks in ambient air from axially arranged openings and mixes these with a gas supplied via a gas connection arranged on the housing 2. This mixture is discharged via an outlet opening 17 on the housing 2, preferably to a gas burner.
  • the arranged on the housing 2 gas supply 9 has outside the housing 2, a safety device 14 against gas leakage, which is designed so that all standard requirements are met and neither by the housing 2 nor by components therein must be secured against gas leakage.
  • the radial fan 1 a control valve 3 with a valve seat 4, wherein the valve seat 4 of the control valve 3 is formed from a part of the housing 2.
  • the valve seat 3 is thus formed as the housing 2 made of die-cast and must provide no tightness for the supplied gas.
  • a valve body 5, which is movable relative to the valve seat 4, is provided, which can be moved by means of a control device 6 and, depending on the position, regulates the inflow quantity of the gas.
  • the valve body 5 is designed as a valve cone and the valve seat 4 with a shape complementary to the valve cone 5 in order to make a very fine dosage of the amount of gas and especially to be able to adjust very small amounts of gas.
  • the control device 6 is preferably designed as a stepping motor and received between the covers of the housing 2 in a corresponding receiving space. The storage takes place here by recesses in the Dekkeln of the housing 2.
  • an electric line 11 is provided from the interior of the housing 2 via a passage 16 to the outside.
  • the passage 16 may be sealed.
  • the gas outlet 8 is formed as an annular gap.
  • control valve 3 Due to the fact that the control valve 3 according to the invention does not have to perform a safety function against gas leakage, it can already be set at the end of the operation of the gas burner in an optimal position for the next commissioning.
  • the optimal position depends in particular on the Ignition behavior of the gas burner.
  • the safety function against gas leakage is ensured exclusively by the direction indicated in the gas supply 9 safety device 14 against gas leakage.
  • Fig. 2 shows a cross-sectional view of a portion of the housing 2 with a protective housing 10 attached thereto on the outside.
  • the control device 6 is arranged, which regulates the position of the valve body 5 to the valve seat 4.
  • the protective housing 10 is attached to the housing 2 by means of screws 18 and sealed with gaskets 15 against gas leakage.
  • the control device 6 is arranged in the gas path.
  • the leading to the control device 6 electrical line 11 extends through the arranged on the protective housing 10 passage 16 ', which is also sealed against gas leakage.
  • the valve seat 4 is formed in the embodiment shown in the interior of the housing 2, but it may also be provided to provide the valve seat 4 directly on the outer edge of the housing 2.
  • the gas outlet 8 which is also arranged in the embodiment shown in the interior of the housing, would then also provided offset on the outer edge of the housing 2 in the circumferential direction. Also in this embodiment, a tightness of the valve seat 4 is not necessary, so that the preferably made of die-cast housing ensures a sufficiently good surface.
  • the protective housing 10 may be made of cast iron, die-cast or plastic, for example. In an alternative embodiment, it is also possible to provide, instead of a protective housing 10, parts of the control valve 3, for example the control device 6, in a split tube.
  • valve seat 4 in a further alternative embodiment for a formed from a part of the housing 2 valve seat 4 is shown in a sectional view.
  • the gas supply 9 takes place directly into the housing 2, on which two arranged in series, for example, designed as a solenoid 20 securing devices 14 are provided against gas leakage after completion of the operation of the radial fan 1 completely and exclusively the protection against gas leakage take.
  • the gas connection of the gas supply 9 via an internal and external thread or a flange.
  • the valve seat 4 of the control valve 3 in the embodiment according to Fig. 3 not aligned in the radial but in the axial direction of the radial impeller.
  • the control device 6 for regulating the control valve is provided in a protective housing 10 arranged on the outside of the housing 2.
  • This protective housing 10 is screwed to the housing 2 and sealed against gas leakage by means of seals 15.
  • two safety devices 14 are provided against gas leakage. As long as the standard requirements are met, it may also suffice to provide only one such device.
  • the safety devices 14 against gas leakage are also sealed against the housing 2 by means of seals 15 against gas leakage and secured by screws 18 to the housing 2.
  • Fig. 4 is a perspective view of the control device 6 is shown on the housing 2 shown only to a small extent.
  • the housing 2 formed from two covers has receptacles 19 into which the control device 6 can be inserted or fitted.
  • the control device 6 without additional fastening means in the housing 2 can be fixed.
  • the control device 6 can be held in particular by two clips, not shown, or by the corresponding counterpart of the housing 2 in the receptacle 19.
  • the receptacle 19 preferably formed as a groove is taken into account in the manufacturing process of the associated cover of the housing 2 and thus does not have to be added afterwards.
  • Fig. 5 shows a schematic representation of a printed circuit board 13 with attached control device 6 and radial fan 1.
  • the circuit board 13 receives via a bus 12, both the data for the radial fan 1 as for the control device 6.
  • the circuit board 13 is divided into the parts A and B, wherein the Siemens.A is provided for the air mass flow control of the radial fan 1 and the area B for the driver of the control device 6.
  • the control device 6 electronically via the same BUS 12 as the radial fan 1 can be controlled.

Description

Die Erfindung betrifft ein Gebläse, insbesondere für einen Gasbrenner, zur Vormischung von Luft und Gas, das ein Gehäuse aufweist, und mit einem Regelventil zur Regelung der Gasmenge, das einen Ventilsitz umfasst, wobei der Ventilsitz des Regelventils aus einem Teil des Gehäuses gebildet ist.The invention relates to a fan, in particular for a gas burner, for premixing of air and gas, which has a housing, and with a control valve for regulating the amount of gas, which comprises a valve seat, wherein the valve seat of the control valve is formed from a part of the housing.

Stand der TechnikState of the art

Aus dem Stand der Technik ist es bekannt, bei Gasbrennern Gas und Luft vormischende Gasheizgebläse einzusetzen, wobei eine Luftzahl Lambda von 1,3 angestrebt wird. Aus Sicherheitsgründen muss die Bereitstellung des Gases nach einer Normforderung durch mindestens zwei Sicherheitsventile der Klassen C und B gegen eine mögliche Gasleckage gesichert sein. Zur Gewährleistung dieses Sicherheitserfordernisses und zur Steuerung der benötigten Gasmenge werden gewöhnlich Gaskombiregler eingesetzt, die sowohl die vorgeschriebenen Sicherheitsventile zum Absperren des Gasweges bei Beendigung einer Wärmeforderung oder bei Flammenausfall des Gasbrenners als auch das zur Steuerung der Gasmenge benötigte Regelventil umfassen. Die Gaskombiregler werden häufig als Extrabaugruppe dem Gebläse vorgeschaltet angeordnet, wobei von dem Gaskombiregler eine Verbindung zu dem Gebläse bereitgestellt ist, das die angesaugte Luft mit dem zugeführten Gas vermischt und dem Gasbrenner zuführt.From the prior art, it is known to use in gas burners gas and air pre-mixing Gasheizgebläse, with an air ratio lambda of 1.3 is desired. For safety reasons, the provision of the gas according to a standard requirement by at least two safety valves of the classes C and B must be secured against a possible gas leakage. To ensure this safety requirement and to control the amount of gas required, gas combi regulators are commonly used which provide both the prescribed safety valves for shutting off the gas path upon termination a heat demand or flame failure of the gas burner as well as the control valve needed to control the amount of gas. The gas combi regulators are often arranged upstream of the blower as an extra assembly, with the gas combi regulator providing a connection to the blower which mixes the sucked air with the supplied gas and supplies it to the gas burner.

Aus der DE 101 61842 A1 ist eine Mischeinrichtung für gebläseunterstützte Gasbrenner bekannt, wobei das Gebläse und der Gaskombiregler in einem gemeinsamen Gehäuse untergebracht sind. Hierdurch wird der Vorteil erzielt, dass die Beimischung der zur Verbrennung notwendigen Gasmenge direkt am Laufrad erfolgt. Nachteilig an dieser Bauform ist jedoch, dass zumindest der gasführende Bereich des gemeinsamen Gehäuses nach der Norm EN161 gasdicht ausgeführt sein muss. Gewöhnlich werden die Gehäuse von Gasheizgebläsen aus Druckguss hergestellt. Eine Herstellung eines gasdichten Druckgussgehäuses ist jedoch nur unter zusätzlichem kostenintensiven Aufwand möglich. Alternativ müsste zusätzlich eine Dichtung für das Gehäuse vorgesehen sein, dass sicher kein Gas austreten kann. Ferner ist an dem aufgezeigten Aufbau nachteilig, dass eine Integration von Gebläse und Gaskombiregler in einem Gehäuse zu komplexen Fertigungs- und Prüfabläufen führt. Auch im Servicefall weist die vom Stand der Technik offenbarte Lösung wesentliche Nachteile auf, da bei einem Ausfall des Ventilators der Gaskombiregler ebenfalls mit ausgetauscht werden muss. Entsprechend muss bei einem Ausfall des Gaskombireglers auch der Ventilator getauscht werden. Dies führt in beiden Fällen ebenfalls zu hohen Kosten.From the DE 101 61842 A1 a mixing device for fan-assisted gas burner is known, wherein the fan and the gas-combi controller are housed in a common housing. As a result, the advantage is achieved that the mixing of the amount of gas required for combustion takes place directly on the impeller. A disadvantage of this design, however, is that at least the gas-conducting region of the common housing must be gas-tight in accordance with the EN161 standard. Usually the casings of gas blowers are made of die cast. However, a production of a gas-tight die-cast housing is possible only with additional costly effort. Alternatively, a seal should additionally be provided for the housing, that certainly no gas can escape. Furthermore, it is disadvantageous in the construction shown that an integration of blower and gas combination controller in a housing leads to complex manufacturing and test procedures. Also in case of service, the solution disclosed by the prior art has significant disadvantages, since in case of failure of the fan, the gas combination regulator must also be replaced with. Accordingly, if the gas-combi regulator fails, the fan must also be replaced. This also leads to high costs in both cases.

Aus der DE 197 29 047 C1 ist eine Mischvorrichtung zur Erzeugung eines Gemisches aus Gas und Verbrennungsluft für einen Brenner bekannt. Eine solche Mischvorrichtung ist ferner aus der DE 10 2004 007 123 B3 offenbart. Bei den genannten Mischeinrichtungen des Stands der Technik wird Gas in eine Mischkammer eingeleitet, die durch den Luftstrom eines extern angeordneten Gebläses durchströmt wird. Die Zumischung und Vermischung des Gases erfolgt hierbei entweder durch einen Ringspalt, oder durch eine Venturidüse. Die aufgezeigten gezeigten Mischvorrichtungen sind als zusätzliche Bauteile neben dem Gasbrenner und dem Gebläse vorgesehen und gewährleistet eine gute Durchmischung in dem gewünschten Gas-/Luftverhältnis. Nachteilig an den aufgezeigten Mischvorrichtungen ist, dass für die Vermischung von Luft und Gas ein zusätzliches Bauteil bereitgestellt werden muss, mittels dem sich Gas und Verbrennungsluft im richtigen Verhältnis mischen sollen, Hierfür ist einerseits ein großer Platzbedarf vonnöten, andererseits werden durch entsprechende zusätzliche Bauteile, wie eine Mischkammer, zusätzliche Kosten generiert. Auch kann bei einem großem Abstand bzw. einem großem Volumen bis zu dem Gasbrenner eine lange Totzeit entstehen. Totzeit bedeutet hierbei die Zeit, bis nach einer Ruhephaae der Anlage dem Gasheizgerät ausreichend Gas aus der Gasleitung zugeführt Ist.From the DE 197 29 047 C1 For example, a mixing device for generating a mixture of gas and combustion air for a burner is known. Such a mixing device is further from the DE 10 2004 007 123 B3 disclosed. In the said mixing devices of the prior art, gas is introduced into a mixing chamber through which the air flow of an externally arranged blower flows. The mixing and mixing of the gas takes place either through an annular gap, or through a Venturi nozzle. The indicated shown mixing devices are provided as additional components in addition to the gas burner and the blower and ensures a good mixing in the desired gas / air ratio. A disadvantage of the shown mixing devices is that for the mixing of air and gas, an additional component must be provided by means of the gas and combustion air to mix in the right proportion, this is on the one hand a large amount of space needed, on the other hand by appropriate additional components such a mixing chamber generates additional costs. Also, at a large distance or a large volume up to the gas burner, a long dead time arise. Dead time in this case means the time until after a Ruhephaae the plant the gas heater enough gas is supplied from the gas line.

Aus der EP 0 834 695 A1 ist ein vormischendes Radialgebläse bekannt, das sich aus den Baueinheiten Ventilation, Gasversorgung, Mischungskanal und Ventileinheit zusammensetzt. Der Ventilsitz des die Gasmenge steuernden Ventils Ist dabei in das Gehäuse integriert.From the EP 0 834 695 A1 a vorormischendes radial blower is known, which is composed of the units ventilation, gas supply, mixing channel and valve unit. The valve seat of the gas quantity controlling valve is integrated into the housing.

Bei der EP 1 243 657 A1 ist ein Gebläse für Verbrennungsluft offenbart, bei dem darauf abgestellt wird, dass am Lufteinlass eine Sensoreinrichtung zum Ermitteln des Luft-Massenstroms angeordnet ist, die mit einer elektronischen Steuereinheit funktionsverbunden ist und zu dieser Signale zur Aufbereitung des Verhältnisses Verbrennungsmedium/Verbrennungsluft in Abhängigkeit von der gewünschten Heizleistung sendet.In the EP 1 243 657 A1 a blower for combustion air is disclosed, which is designed to be arranged at the air inlet sensor means for determining the air mass flow, which is operatively connected to an electronic control unit and to these signals for processing the ratio of combustion medium / combustion air as a function of the desired Heating power sends.

Die WO 2008/165030 A2 offenbart ein Gasventil mit Regel- und Sicherheitsventil wobei der Ventilsitz des Sicherheitsventils am Gasventilgehäuse ausgebildet ist.The WO 2008/165030 A2 discloses a gas valve with control and safety valve wherein the valve seat of the safety valve is formed on the gas valve housing.

AufgabenstetiungAufgabenstetiung

Der Erfindung liegt daher die Aufgabe zugrunde, ein Gebläse mit kurzer Totzeit bereitzustellen, das eine geringe Baugröße aufweist und kostengünstig herzustellen ist.The invention is therefore based on the object to provide a fan with a short dead time, which has a small size and is inexpensive to manufacture.

Lösungsolution

Die Aufgabe wird durch ein Gebläse mit den Merkmalen des Anspruchs 1 gelöst. Das erfiridungsgemäße Gebläse weist ein Gehäuse mit einer Gaszuführung sowie ein Regelventil zur Regelung der Gasmenge auf. Das Regelventil umfasst einen Ventilsitz, der aus einem Teil des Gehäuses gebildet ist. Hierdurch ist vorteilhafterweise gewährleistet, dass die Totzeit bis zur Einspeisung der gewünschten Gasmenge sehr kurz ist und die Bauhöhe des Gesamtaufbaus deutlich reduziert wird. Das Regelventil muss selbst keine Gasdichtheit,gewährleisten. Eine Sicherung gegen Gasleckage kann ausschließlich von einer oder mehrerer Sicherungseinrichtungen außerhalb des Gehäuses oder außen an dem Gehäuse des Gebläses gewährleistet sein.The object is achieved by a blower with the features of claim 1. The erfiridungsgemäße blower has a housing with a gas supply and a control valve for controlling the amount of gas. The control valve comprises a valve seat, which is formed from a part of the housing. This advantageously ensures that the dead time is very short until the desired amount of gas is fed in and the overall height of the overall construction is significantly reduced. The control valve itself does not have to ensure gas tightness. A fuse against gas leakage can be ensured only by one or more safety devices outside the housing or on the outside of the housing of the blower.

In alternativen Ausführungen der Erfindung kann der Ventilsitz auch im Inneren des Gehäuses oder an der Außenfläche des Gehäuses ausgebildet sein.In alternative embodiments of the invention, the valve seat may also be formed in the interior of the housing or on the outer surface of the housing.

Ebenfalls günstig ist, als Sicherungseinrichtung gegen die Gasleckage Gassicherheitsventile zu verwenden, die die oben genannten Normen erfüllen. Je nach Ausbildung und Klasse des Gassicherheitsventils können eines oder mehrere dieser Ventile vorgesehen sein.It is also beneficial to use gas safety valves that meet the above-mentioned standards as a safety device against gas leakage. Depending on the design and class of the gas safety valve, one or more of these valves may be provided.

In einer vorteilhaften Ausführung kann das Regelventil einen Ventilsitz und einen Ventilkörper aufweisen. Als besonders bevorzugte Ausführung eines Ventilkörpers kann ein Ventilkegel verwendet werden, der mit dem entsprechenden Ventilsitz passend zusammenwirkt. Der Ventilsitz kann hierbei beispielsweise als trichterförmige Senke mit mittig angeordneter Durchgangsöffnung ausgebildet sein. Zum Erreichen der nötigen Toleranzen ist das Gehäuse vorteilhafterweise als ein Druckgussteil hergestellt, wobei die Ausbildung des Ventilsitzes an dem Gehäuse bei dem Gießvorgang, vorzugsweise ohne Bearbeitung, mit hergestellt wird. Da an den Ventilsitz keine Anforderung hinsichtlich der Gasdichtheit gestellt ist, reicht für die Oberfläche die Druckgussqualität aus. Zusätzliche Nachbearbeitungsschritte können somit entfallen.In an advantageous embodiment, the control valve may have a valve seat and a valve body. As a particularly preferred embodiment of a valve body, a valve cone can be used, which cooperates with the corresponding valve seat. The valve seat may in this case be designed, for example, as a funnel-shaped depression with a centrally arranged passage opening. To achieve the necessary tolerances, the housing is advantageously produced as a die-cast part, wherein the formation of the valve seat on the housing in the casting process, preferably without machining, is produced. Since there is no requirement for gas tightness on the valve seat, die casting quality is sufficient for the surface. Additional post-processing steps can thus be omitted.

Erfindungsgemäß weist das Regelventil eine Steuervorrichtung auf, mittels derer der Ventilkörper relativ zu dem Ventilsitz bewegbar ist. Als günstige Variante bietet sich hierbei für die Steuervorrichtung ein Schrittmotor an.According to the invention, the control valve has a control device, by means of which the valve body is movable relative to the valve seat. As a favorable variant, this offers a stepper motor for the control device.

Als günstige Ausführung kann vorgesehen sein, zwischen der Steuervorrichtung und dem Ventilsitz einen Einströmraum auszubilden, der einen Gasauslass zum Radialgebläserad hin aufweisen kann. Im Einströmraum kann sich der Ventilkörper axial bewegen und somit den Öffnungsgrad des Regelventils bestimmen. Durch die vorteilhafte Anordnung des Regelventils mit Ventilsitz direkt an dem Gehäuse sind nur sehr kurze Strömungswege des Gases zurückzulegen und über den Einströmraum kann das Gas direkt an das Gebläserad zur Vermischung mit der Luft eingebracht werden.As a favorable embodiment can be provided to form an inflow between the control device and the valve seat, which may have a gas outlet to the Radialgebläserad out. In the inflow space, the valve body can move axially and thus determine the degree of opening of the control valve. Due to the advantageous arrangement of the control valve with valve seat directly to the housing only very short flow paths of the gas are traversed and via the inflow space, the gas can be introduced directly to the impeller for mixing with the air.

Durch den erfindungsgemäßen Aufbau des Gebläses ist ferner vorteilhaft, dass die Öffnungsstellung des Regelventils in einer Bereitschaftsstellung des Gebläses für eine folgende Betriebsphase voreinstellbar ist. Bei einem Einsatz des Gebläses gemäß der Erfindung bei Gasbrennern kann durch eine optimale Einstellung des Regelventils eine Optimierung des Zündverhaltens für die nächste Inbetriebnahme des Gasbrenners erzielt werden. Dies ist insbesondere günstig, da somit sichergestellt werden kann, dass die der Bereitschaftsstellung folgende Inbetriebnahme des Gasbrenners bei optimalen Zündbedingungen erfolgt. Bei Gasbrennern mit vormischenden Gebläsen kann dies von besonderer Bedeutung sein, da deren Zündbereich wesentlich kleiner Ist als der von atmosphärischen Brennern.Due to the construction of the blower according to the invention is also advantageous that the opening position of the control valve is preset in a ready position of the blower for a subsequent operating phase. When using the Blowers according to the invention in gas burners can be achieved by an optimal adjustment of the control valve, an optimization of the ignition behavior for the next start-up of the gas burner. This is particularly favorable since it can thus be ensured that the commissioning of the gas burner following the standby position takes place under optimum ignition conditions. For gas burners with pre-mixing blowers, this can be of particular importance, since their ignition range is much smaller than that of atmospheric burners.

In einer alternativen Ausführung ist es auch möglich, dass die Steuervorrichtung des Regelventils außen an dem Gehäuse In einem Spaltrohr oder In einem zusätzlichen, außenseitig an dem Gehäuse befestigten und gegen Gasaustritt abgedichteten Schutzgehäuse angeordnet ist. Das Schutzgehäuse kann entweder wie das Gehäuse aus einem Druckgußteil oder aber auch einem Gussteil oder Kunststoff gebildet sein. Hierdurch ist eine konstruktiv einfache, kostengünstige und wartungsfreundliche Lösung hinsichtlich der Anordnung des Regelventils am Gehäuse bereitgestellt.In an alternative embodiment, it is also possible for the control device of the control valve to be arranged on the outside of the housing in a split tube or in an additional protective housing fastened to the outside of the housing and sealed against gas leakage. The protective housing can either be formed as the housing of a die-cast or even a casting or plastic. As a result, a structurally simple, cost-effective and maintenance-friendly solution with respect to the arrangement of the control valve is provided on the housing.

Bei einer an dem Gehäuse integrierten Anordnung des Regelventils ist die zur Steuervorrichtung führende elektrische Leitung gegen Gasaustritt abgedichtet. Die Abdichtung der gewöhnlich als Kabel ausgebildeten elektrischen Leitung kann beispielsweise durch eine Silikonumspritzung gewährleistet sein.In an integrated on the housing arrangement of the control valve leading to the control device electrical line is sealed against gas leakage. The sealing of the electrical cable, which is usually designed as a cable, can be ensured, for example, by a silicone encapsulation.

Es ist ferner vorteilhaft, dass die Steuervorrichtung elektronisch über einen BUS ansteuerbar ist. Besonders günstig ist dabei, dass der BUS zum Gasbrenner auch zur Datenübermittlung für das Gebläse und den Schrittmotor verwendbar ist. Ebenfalls vorteilhaft ist, dass die Steuerung des Gebläses und eine Ansteuerung bzw. Regelung des Regelventils über eine einzige Leiterplatte ausführbar ist. Über den BUS erhält der Mikrocomputer die Befehle für die Steuereinrichtung (Schrittmotor), wodurch die Elektronik angesteuert wird.It is also advantageous that the control device can be controlled electronically via a BUS. It is particularly advantageous that the BUS gas burner for data transmission for the fan and the stepper motor is used. It is also advantageous that the control of the fan and a control or regulation of the control valve via a single circuit board is executable. The microcomputer receives the commands for the control device (stepper motor) via the BUS, whereby the electronics are controlled.

In einer günstigen Ausführung der Erfindung kann die Steuervorrichtung ohne zusätzliche Befestigungsmittel an dem Gehäuse festgelegt werden. Dabei ist günstig, dass eine einfache Montage ohne zusätzliche Befestigungsmittel wie Schrauben günstig, dass eine einfache Montage ohne zusätzliche Befestigungsmittel wie Schrauben oder dergleichen durchgeführt werden kann.In a favorable embodiment of the invention, the control device can be fixed to the housing without additional fastening means. It is favorable that a simple installation without additional fasteners such as screws favorable that a simple assembly without additional fasteners such as screws or the like can be performed.

Des Weiteren kann die Gaszuführung in einer bevorzugten Ausführung direkt an dem Gassicherheitsventil bzw. den Gassicherheitsventilen angeordnet sein.Furthermore, in a preferred embodiment, the gas supply can be arranged directly on the gas safety valve or the gas safety valves.

Weitere Vorteile der Erfindung werden nachstehend gemeinsam mit der Beschreibung von bevorzugten Ausführungsbeispielen der Erfindung anhand der Figuren näher dargestellt. Die Darstellungen in den beigefügten Figuren erfolgt beispielhaft und schematisch. In den Figuren sind jeweils gleiche Teile mit gleichen Bezugszeichen versehen. Ferner sind nur die für das Verständnis der Erfindung wesentlichen Elemente dargestellt.Further advantages of the invention will be described in more detail below together with the description of preferred embodiments of the invention with reference to the figures. The illustrations in the attached figures are exemplary and schematic. In the figures, the same parts are provided with the same reference numerals. Furthermore, only the essential elements for understanding the invention are shown.

Es zeigen:Show it:

  • Fig. 1 eine teilweise aufgebrochene Seitenansicht des Radialgebläses gemäß der Erfindung; Fig. 1 a partially broken side view of the radial fan according to the invention;
  • Fig. 2 eine Schnittansicht eines Teils des Gehäuses mit außenseitig angeordnetem Schutzgehäuse; Fig. 2 a sectional view of a portion of the housing with the outside arranged protective housing;
  • Fig. 3 eine Schnittansicht eines Teils des Gehäuses mit daran angeordneter Sicherungseinrichtung gegen Gasleckage; Fig. 3 a sectional view of a portion of the housing with arranged thereon safety device against gas leakage;
  • Fig. 4 eine perspektivische Ansicht der Steuerungsvorrichtung; Fig. 4 a perspective view of the control device;
  • Fig. 5 eine schematische Darstellung einer Steuerung. Fig. 5 a schematic representation of a controller.

In Fig. 1 ist ein Radialgebläse 1 für einen Gasbrenner zur Vormischung von Luft und Gas in einer teilweise aufgebrochenen Seitenansicht dargestellt. Das Gehäuse 2 des Radialgebläses 1 ist vorzugsweise aus Druckguss hergestellt und durch zwei einen Gehäuseinnenraum einschließende komplementäre Deckel gebildet. Im Inneren des Gehäuses ist ein Radialgebläserad angeordnet, das aus axial angeordneten Öffnungen Umgebungsluft ansaugt und diese mit einem über an dem Gehäuse 2 angeordneten Gasanschluss zugeführten Gas vermischt. Dieses Gemisch wird über eine Austrittsöffnung 17 am Gehäuse 2 vorzugsweise an einen Gasbrenner abgegeben. Die am Gehäuse 2 angeordnete Gaszuführung 9 weist außerhalb des Gehäuses 2 eine Sicherheitseinrichtung 14 gegen Gasleckage auf, die so ausgebildet ist, dass sämtliche Normerfordernisse erfüllt sind und weder durch das Gehäuse 2 noch durch darin befindliche Komponenten eine Sicherung gegen Gasleckage gewährleistet sein muss. Zur Regelung der gewünschten Gasmenge weist das Radialgebläse 1 ein Regelventil 3 mit einem Ventilsitz 4 auf, wobei der Ventilsitz 4 des Regelventils 3 aus einem Teil des Gehäuses 2 gebildet ist. Der Ventilsitz 3 ist somit wie das Gehäuse 2 aus Druckguss gebildet und muss keine Dichtheit für das zugeführte Gas bieten. Zur Regelung der gewünschten Gasmenge ist ein gegenüber dem Ventilsitz 4 beweglicher Ventilkörper 5 vorgesehen, der mittels einer Steuervorrichtung 6 bewegbar ist und je nach Stellung die Einströmmenge des Gases regelt. Bei dem gezeigten Ausführungsbeispiel ist der Ventilkörper 5 als ein Ventilkegel und der Ventilsitz 4 mit einer zu dem Ventilkegel 5 komplementären Form ausgebildet, um eine möglichst feine Dosierung der Gasmenge vornehmen und insbesondere auch sehr geringe Gasmengen einregeln zu können.
Die Steuervorrichtung 6 ist vorzugsweise als Schrittmotor ausgebildet und zwischen den Deckeln des Gehäuses 2 in einem entsprechenden Aufnahmeraum aufgenommen. Die Lagerung erfolgt hierbei durch Aussparungen in den Dekkeln des Gehäuses 2. Zur Stromversorgung der Steuervorrichtung 6 ist eine elektrische Leitung 11 aus dem Inneren des Gehäuses 2 über einen Durchgang 16 nach außen vorgesehen. Der Durchgang 16 kann abgedichtet sein. Bei einer Stellung des Regelventils 3, bei dem der Ventilkörper 5 von dem Ventilsitz 4 beabstandet ist, strömt Gas aus der Gaszufuhr 9 in den Einströmraum 7, wird über einen Gasauslass 8 von dem Radialgebläserad angesaugt und mit der vom Gebläserad angesaugten Luft vermischt. Vorzugsweise ist der Gasauslass 8 als Ringspalt ausgebildet.In Fig. 1 a radial fan 1 for a gas burner for premixing of air and gas is shown in a partially broken side view. The housing 2 of the radial fan 1 is preferably made of die-cast and formed by two enclosing a housing interior complementary cover. Inside the housing, a radial fan wheel is arranged, which sucks in ambient air from axially arranged openings and mixes these with a gas supplied via a gas connection arranged on the housing 2. This mixture is discharged via an outlet opening 17 on the housing 2, preferably to a gas burner. The arranged on the housing 2 gas supply 9 has outside the housing 2, a safety device 14 against gas leakage, which is designed so that all standard requirements are met and neither by the housing 2 nor by components therein must be secured against gas leakage. To control the desired amount of gas, the radial fan 1, a control valve 3 with a valve seat 4, wherein the valve seat 4 of the control valve 3 is formed from a part of the housing 2. The valve seat 3 is thus formed as the housing 2 made of die-cast and must provide no tightness for the supplied gas. To control the desired amount of gas, a valve body 5, which is movable relative to the valve seat 4, is provided, which can be moved by means of a control device 6 and, depending on the position, regulates the inflow quantity of the gas. In the embodiment shown, the valve body 5 is designed as a valve cone and the valve seat 4 with a shape complementary to the valve cone 5 in order to make a very fine dosage of the amount of gas and especially to be able to adjust very small amounts of gas.
The control device 6 is preferably designed as a stepping motor and received between the covers of the housing 2 in a corresponding receiving space. The storage takes place here by recesses in the Dekkeln of the housing 2. To power the control device 6, an electric line 11 is provided from the interior of the housing 2 via a passage 16 to the outside. The passage 16 may be sealed. At a position of the control valve 3, wherein the valve body 5 is spaced from the valve seat 4, gas flows from the gas supply 9 into the inflow 7, is sucked through a gas outlet 8 of the Radialgebläserad and mixed with the sucked air from the impeller. Preferably, the gas outlet 8 is formed as an annular gap.

Dadurch, dass das erfindungsgemäße Regelventil 3 keine Sicherungsfunktion gegen Gasleckage ausführen muss, kann es bereits bei Beendigung des Betriebs des Gasbrenners in eine optimale Stellung für die nächste Inbetriebnahme gesetzt werden. Die optimale Stellung richtet sich insbesondere nach dem Zündverhalten des Gasbrenners. Die Sicherungsfunktion gegen Gasleckage wird ausschließlich durch die bei der Gaszuführung 9 angedeutete Sicherungseinrichtung 14 gegen Gasleckage gewährleistet.Due to the fact that the control valve 3 according to the invention does not have to perform a safety function against gas leakage, it can already be set at the end of the operation of the gas burner in an optimal position for the next commissioning. The optimal position depends in particular on the Ignition behavior of the gas burner. The safety function against gas leakage is ensured exclusively by the direction indicated in the gas supply 9 safety device 14 against gas leakage.

Fig. 2 zeigt eine Querschnittsansicht eines Teils des Gehäuses 2 mit einem daran außenseitig befestigten Schutzgehäuse 10. Innerhalb des Schutzgehäuses 10 ist die Steuervorrichtung 6 angeordnet, die die Stellung des Ventilkörpers 5 zu dem Ventilsitz 4 regelt. Das Schutzgehäuse 10 ist an dem Gehäuse 2 mittels Schrauben 18 befestigt und mit Dichtungen 15 gegenüber Gasaustritt abgedichtet. Die Steuervorrichtung 6 ist im Gasweg angeordnet. Die zu der Steuerungsvorrichtung 6 führende elektrische Leitung 11 verläuft durch den am Schutzgehäuse 10 angeordneten Durchgang 16', der ebenfalls gegenüber Gasaustritt abgedichtet ist. Der Ventilsitz 4 ist bei der gezeigten Ausführung im Inneren des Gehäuses 2 ausgebildet, es kann jedoch auch vorgesehen sein, den Ventilsitz 4 direkt am Außenrand des Gehäuses 2 vorzusehen. Hierfür wäre es lediglich notwendig, die Verbindung zwischen der Steuervorrichtung 6 und dem Ventilkörper 5 zu verkürzen. Der Gasauslass 8, der bei der gezeigten Ausführung ebenfalls im Inneren des Gehäuses angeordnet ist, wäre dann ebenfalls am Außenrand des Gehäuses 2 in Umfangsrichtung versetzt vorgesehen. Auch bei dieser Ausführung ist eine Dichtheit des Ventilsitzes 4 nicht notwendig, so dass das vorzugsweise aus Druckguss hergestellte Gehäuse eine ausreichend gute Oberfläche gewährleistet. Das Schutzgehäuse 10 kann beispielsweise aus Guss, Druckguss oder Kunststoff hergestellt sein. In einer alternativen Ausführung kann auch vorgesehen sein, anstatt eines Schutzgehäuses 10 Teile des Regelventils 3, beispielsweise die Steuervorrichtung 6, in einem Spaltrohr vorzusehen. Fig. 2 shows a cross-sectional view of a portion of the housing 2 with a protective housing 10 attached thereto on the outside. Within the protective housing 10, the control device 6 is arranged, which regulates the position of the valve body 5 to the valve seat 4. The protective housing 10 is attached to the housing 2 by means of screws 18 and sealed with gaskets 15 against gas leakage. The control device 6 is arranged in the gas path. The leading to the control device 6 electrical line 11 extends through the arranged on the protective housing 10 passage 16 ', which is also sealed against gas leakage. The valve seat 4 is formed in the embodiment shown in the interior of the housing 2, but it may also be provided to provide the valve seat 4 directly on the outer edge of the housing 2. For this purpose, it would only be necessary to shorten the connection between the control device 6 and the valve body 5. The gas outlet 8, which is also arranged in the embodiment shown in the interior of the housing, would then also provided offset on the outer edge of the housing 2 in the circumferential direction. Also in this embodiment, a tightness of the valve seat 4 is not necessary, so that the preferably made of die-cast housing ensures a sufficiently good surface. The protective housing 10 may be made of cast iron, die-cast or plastic, for example. In an alternative embodiment, it is also possible to provide, instead of a protective housing 10, parts of the control valve 3, for example the control device 6, in a split tube.

In Fig. 3 ist eine weitere alternative Ausführungsform für einen aus einem Teil des Gehäuses 2 gebildeten Ventilsitz 4 in einer Schnittansicht dargestellt. Die Gaszufuhr 9 erfolgt direkt ins Gehäuse 2, an dem zwei in Reihe angeordnete, beispielsweise als Hubmagnet 20 ausgebildete Sicherungseinrichtungen 14 gegen Gasleckage vorgesehen sind, die nach Beendigung des Betriebes des Radialgebläses 1 vollständig und ausschließlich die Sicherung gegen Gasleckage übernehmen. Der Gasanschluss der Gaszufuhr 9 erfolgt über ein Innen- und Außengewinde oder über einen Flansch. Gegenüber den Ausführungen gemäß Fig. 1 und Fig. 2 ist der Ventilsitz 4 des Regelventils 3 bei der Ausführung gemäß Fig. 3 nicht in radialer, sondern in axialer Richtung des Radialgebläserades ausgerichtet. Bei einer Öffnungsstellung des Ventilkörpers 5 gegenüber dem Ventilsitz 4 strömt bei geöffneten Sicherungseinrichtungen 14 gegen Gasleckage Gas in den Einströmraum 7 und weiter durch den Gasauslass 8 zu dem Radialgebläserad. Die Steuerungsvorrichtung 6 zur Regelung des Regelventils ist in einem außenseitig an dem Gehäuse 2 angeordneten Schutzgehäuse 10 vorgesehen. Dieses Schutzgehäuse 10 ist an dem Gehäuse 2 verschraubt und gegenüber Gasaustritt mittels Dichtungen 15 abgedichtet. Bei der gezeigten Ausführung sind zwei Sicherungseinrichtungen 14 gegen Gasleckage vorgesehen. Solange die Normerfordernisse erfüllt sind, kann es auch genügen, nur eine derartige Einrichtung vorzusehen. Die Sicherungseinrichtungen 14 gegen Gasleckage sind gegenüber dem Gehäuse 2 ebenfalls mittels Dichtungen 15 gegen Gasaustritt abgedichtet und mittels Schrauben 18 an dem Gehäuse 2 befestigt.In Fig. 3 a further alternative embodiment for a formed from a part of the housing 2 valve seat 4 is shown in a sectional view. The gas supply 9 takes place directly into the housing 2, on which two arranged in series, for example, designed as a solenoid 20 securing devices 14 are provided against gas leakage after completion of the operation of the radial fan 1 completely and exclusively the protection against gas leakage take. The gas connection of the gas supply 9 via an internal and external thread or a flange. Compared to the statements according to Fig. 1 and Fig. 2 is the valve seat 4 of the control valve 3 in the embodiment according to Fig. 3 not aligned in the radial but in the axial direction of the radial impeller. In an open position of the valve body 5 relative to the valve seat 4 flows with open safety devices 14 against gas leakage gas into the inflow 7 and further through the gas outlet 8 to the Radialgebläserad. The control device 6 for regulating the control valve is provided in a protective housing 10 arranged on the outside of the housing 2. This protective housing 10 is screwed to the housing 2 and sealed against gas leakage by means of seals 15. In the embodiment shown, two safety devices 14 are provided against gas leakage. As long as the standard requirements are met, it may also suffice to provide only one such device. The safety devices 14 against gas leakage are also sealed against the housing 2 by means of seals 15 against gas leakage and secured by screws 18 to the housing 2.

In Fig. 4 ist eine perspektivische Ansicht der Steuervorrichtung 6 an dem nur zu einem geringen Teil dargestellten Gehäuse 2 gezeigt. Zur Aufnahme der Steuervorrichtung 6 ist vorgesehen, dass das aus zwei Deckeln gebildete Gehäuse 2 Aufnahmen 19 aufweist, in die die Steuervorrichtung 6 eingelegt bzw. eingepasst werden kann. Somit ist die Steuervorrichtung 6 ohne zusätzliche Befestigungsmittel in dem Gehäuse 2 festlegbar. Die Steuervorrichtung 6 kann insbesondere durch zwei nicht gezeigte Clips oder durch das entsprechende Gegenstück des Gehäuses 2 in der Aufnahme 19 gehalten werden. Die vorzugsweise als Nut gebildete Aufnahme 19 wird beim Herstellprozess des zugehörigen Deckels des Gehäuses 2 mit berücksichtigt und muss somit nicht im Nachhinein hinzugefügt werden.In Fig. 4 is a perspective view of the control device 6 is shown on the housing 2 shown only to a small extent. To accommodate the control device 6, it is provided that the housing 2 formed from two covers has receptacles 19 into which the control device 6 can be inserted or fitted. Thus, the control device 6 without additional fastening means in the housing 2 can be fixed. The control device 6 can be held in particular by two clips, not shown, or by the corresponding counterpart of the housing 2 in the receptacle 19. The receptacle 19 preferably formed as a groove is taken into account in the manufacturing process of the associated cover of the housing 2 and thus does not have to be added afterwards.

Fig. 5 zeigt eine schematische Darstellung einer Leiterplatte 13 mit daran angeschlossener Steuervorrichtung 6 und Radialgebläse 1. Die Leiterplatte 13 empfängt über einen BUS 12 sowohl die Daten für das Radialgebläse 1 als auch für die Steuervorrichtung 6. Dazu ist die Leiterplatte 13 in die Teile A und B unterteilt, wobei der Bereich.A für die Luftmassenstromregelung des Radialgebläses 1 und der Bereich B für den Treiber der Steuervorrichtung 6 vorgesehen ist. Somit ist die Steuervorrichtung 6 elektronisch über denselben BUS 12 wie das Radialgebläse 1 ansteuerbar. Fig. 5 shows a schematic representation of a printed circuit board 13 with attached control device 6 and radial fan 1. The circuit board 13 receives via a bus 12, both the data for the radial fan 1 as for the control device 6. For this purpose, the circuit board 13 is divided into the parts A and B, wherein the Bereich.A is provided for the air mass flow control of the radial fan 1 and the area B for the driver of the control device 6. Thus, the control device 6 electronically via the same BUS 12 as the radial fan 1 can be controlled.

Es wird ausdrücklich darauf hingewiesen, dass alle.verschiedenen Merkmalselemente der einzelnen Ausführungsbeispiele beliebig miteinander kombinierbar sind, soweit wie dies technisch möglich ist und kein Widerspruch besteht. So ist es z. B. möglich, eine Aufnahme der Steuervorrichtung gemäß Fig. 1 auch bei eine Ausführung gemäß Fig. 3 vorzusehen.It is expressly understood that alle.verschiedenen feature elements of each embodiment can be combined with each other, as far as technically possible and there is no contradiction. So it is z. B. possible, a recording of the control device according to Fig. 1 also in an embodiment according to Fig. 3 provided.

Claims (21)

  1. A premixing radial fan for air and gas comprising a housing (2) with a radial fan wheel disposed therein, and a regulation valve (3) for regulating a gas volume, which comprises a valve seat (4), wherein the valve seat (4) of the regulation valve (3) is formed by a portion of the housing (2), characterized in that the regulation valve (3) comprises a control apparatus (6) by which the opening position of the regulation valve (3) can be pre-adjusted in a standby state of the radial fan (1) for a subsequent operating phase.
  2. The radial fan according to claim 1, wherein the valve seat (4) is configured in an interior of the housing (2).
  3. The radial fan according to claim 1, wherein the valve seat (4) is configured at an outer edge of the housing (2).
  4. The radial fan according to at least one of the preceding claims, wherein the housing (2) can be made from die cast material.
  5. The radial fan according to at least one of the preceding claims, wherein the regulation valve (3) comprises a valve body (5).
  6. The radial fan according to claim 5, wherein the valve body (5) is a valve cone.
  7. The radial fan according to claim 1, wherein the control apparatus (6) is a stepper motor.
  8. The radial fan according to at least one of the preceding claims, wherein an inlet cavity (7) is configured between the control apparatus (6) and the valve seat (4).
  9. The radial fan according to claim 8, wherein the inlet cavity (7) has a gas outlet (8) towards a radial fan wheel.
  10. The radial fan according to claim 9, wherein the gas outlet (8) is configured as an annular gap.
  11. The radial fan according to at least one of the preceding claims, wherein at least components of the regulation valve (3) are disposed in a slotted tube.
  12. The radial fan according to at least one of the preceding claims 1 through 10, wherein the control apparatus (6) is disposed in an additional protective housing (10), disposed on the outside of the housing (2) and sealed against gas leakage.
  13. The radial fan according to claim 12, wherein the protective housing (10) can be made of cast material, die cast material or plastic material.
  14. The radial fan according to at least one of the preceding claims, wherein an electric conductor (11) to the control apparatus (6) is sealed against gas leakage.
  15. The radial fan according to at least one of the preceding claims 6 through 14, wherein the control apparatus (6) is configured to be electronically controlled through a bus (12).
  16. The radial fan according to at least one of the preceding claims, wherein the control of the radial fan or a control or regulation of the regulation valve (3) can be performed through a single circuit board (13).
  17. The radial fan according to at least one of the preceding claims 7 through 19, wherein the control apparatus (6) can be attached in the housing (2) without additional fasteners.
  18. The radial fan according to at least one of the preceding claims, wherein the housing (2) is formed by two covers, enclosing a housing cavity, wherein the control apparatus (6) is disposed between the covers.
  19. The radial fan according to at least one of the preceding claims, wherein at least one safety apparatus (1a) against gas leakage is disposed outside of the housing (2) or on the outside at the housing (2).
  20. The radial fan according to claim 19, wherein the at least one safety apparatus (14) against gas leakage is configured as at least one gas safety valve.
  21. The radial fan according to claim 20, wherein the gas supply (9) is disposed at the at least one gas safety valve (14).
EP20070020007 2007-10-12 2007-10-12 Ventilator with integrated control valve Not-in-force EP2048439B1 (en)

Priority Applications (7)

Application Number Priority Date Filing Date Title
EP20070020007 EP2048439B1 (en) 2007-10-12 2007-10-12 Ventilator with integrated control valve
PCT/EP2008/005322 WO2009049694A1 (en) 2007-10-12 2008-06-30 Fan comprising an integrated control valve
CN2008801115062A CN101802498B (en) 2007-10-12 2008-06-30 Fan comprising an integrated control valve
US12/682,654 US8596957B2 (en) 2007-10-12 2008-06-30 Fan with integrated regulation valve
CA 2699809 CA2699809A1 (en) 2007-10-12 2008-06-30 Fan with integrated regulation valve
KR1020107007331A KR20100069665A (en) 2007-10-12 2008-06-30 Fan comprising an integrated control valve
JP2010528280A JP5538228B2 (en) 2007-10-12 2008-06-30 Fan with integrated control valve

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP20070020007 EP2048439B1 (en) 2007-10-12 2007-10-12 Ventilator with integrated control valve

Publications (2)

Publication Number Publication Date
EP2048439A1 EP2048439A1 (en) 2009-04-15
EP2048439B1 true EP2048439B1 (en) 2014-06-18

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EP20070020007 Not-in-force EP2048439B1 (en) 2007-10-12 2007-10-12 Ventilator with integrated control valve

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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
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US9557059B2 (en) 2011-12-15 2017-01-31 Honeywell International Inc Gas valve with communication link
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US20100269931A1 (en) 2010-10-28
US8596957B2 (en) 2013-12-03
JP2011501087A (en) 2011-01-06
JP5538228B2 (en) 2014-07-02
WO2009049694A1 (en) 2009-04-23
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CA2699809A1 (en) 2009-04-23
KR20100069665A (en) 2010-06-24

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