EP1188930B1 - Fan device, in particular radial fan device - Google Patents

Fan device, in particular radial fan device Download PDF

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Publication number
EP1188930B1
EP1188930B1 EP00119951A EP00119951A EP1188930B1 EP 1188930 B1 EP1188930 B1 EP 1188930B1 EP 00119951 A EP00119951 A EP 00119951A EP 00119951 A EP00119951 A EP 00119951A EP 1188930 B1 EP1188930 B1 EP 1188930B1
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EP
European Patent Office
Prior art keywords
air
outlet
fan
housing
assembly according
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
EP00119951A
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German (de)
French (fr)
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EP1188930A1 (en
EP1188930B2 (en
Inventor
Ernst Claussen
Joachim Peetz
Gerd Wegner
Yingan Dr. Xia
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Punker GmbH
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Punker GmbH
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Application filed by Punker GmbH filed Critical Punker GmbH
Priority to AT00119951T priority Critical patent/ATE263925T1/en
Priority to EP00119951A priority patent/EP1188930B2/en
Priority to DE50006003T priority patent/DE50006003D1/en
Publication of EP1188930A1 publication Critical patent/EP1188930A1/en
Application granted granted Critical
Publication of EP1188930B1 publication Critical patent/EP1188930B1/en
Publication of EP1188930B2 publication Critical patent/EP1188930B2/en
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    • 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
    • F04D27/00—Control, e.g. regulation, of pumps, pumping installations or pumping systems specially adapted for elastic fluids
    • F04D27/009—Control, e.g. regulation, of pumps, pumping installations or pumping systems specially adapted for elastic fluids by bleeding, by passing or recycling fluid

Definitions

  • the invention relates to a blower arrangement, in particular Radial fan arrangement, with a fan impeller containing Blower housing, which has an air inlet and an air outlet has.
  • Such, designed as a radial blower fan assemblies are for example from DE-U-298 20 767, the DE-U-298 20 766, EP-A-10 02 957, EP-A-10 02 958, the EP-A-10 22 470 or EP-A-10 22 469 known.
  • Such blowers have high performance and are suitable Therefore, especially as a modern burner blower, which has a large must have modulatable power range.
  • Throttling control is e.g. known from DE 195 48 800 A1.
  • An object of the present invention is therefore to a fan with lower energy losses and quieter to regulate.
  • Blower housing is connected to an air guide assembly, in a pressure side connected to the blower housing Air duct with an outlet-side exhaust opening and a Air duct connected to the fan housing on the suction side an inlet-side inflow opening via an adjustable Opening are connected together such that a part of the pressure-side air flow supplied to the suction-side air flow becomes.
  • the advantages of this arrangement over the conventional Throttling regulation of the blower power are versatile. To the one can bypass regulation of the invention almost trouble-free be integrated in the blower arrangement with.
  • the Blower arrangement has a high overall characteristic line stability, because the responsible for the pressure build-up and sensitive discharge of the example as a spiral housing trained fan housing almost undisturbed by the bypass arrangement remains.
  • the adjustable opening allows a simple and effective power control. All in one Performance range, the blower arrangement works efficiently and quiet.
  • the air duct arrangement can be easily combine with existing blowers so that these are in the Essentially constructive need not be changed.
  • the opening between the pressure side and the suction side Air duct is advantageously by an adjusting member, In particular, an adjustable air damper adjustable.
  • an adjustable air damper adjustable there is the opening and / or the adjusting expediently designed such that the pressure side admixed partial air flow to the flow direction of the suction-side air flow is aligned. Part of the high-energy flow is thereby specifically the low-energy flow in the suction side Air duct fed so that the energy and flow rate the suction-side flow increased. This inflow is loss and quiet.
  • the Effect of the inflow can still be improved by that the opening and / or the adjusting member at the radial Outside of a curved portion of the pressure-side air channel is arranged, as when opening the adjustment or the air damper the high-energy flow automatically through Centrifugal effect of low-energy flow is supplied.
  • the adjusting with a the Air or blower power adjusting or regulating Actuator be connected so that the blower power or a burner output with appropriate use automatically can be regulated.
  • the air duct assembly includes a pressure side of the blower housing connected pressure chamber with an output side Blow-out, wherein the pressure chamber is opposite to the Air outlet of the blower housing at least partially larger Cross section has.
  • This pressure chamber causes in an advantageous manner Way a static pressure increase, especially for the use of heating burners is particularly advantageous.
  • This increase in static pressure can be further improved or amplified when the pressure chamber as Blow-out diffuser with a blow out in the Cross-section widening, in particular continuously widening Air duct is formed.
  • This air duct is suitably curved G-, U- or bow-shaped, so that a very compact diffuser can be achieved that is in front everything is suitable for the burner use.
  • Air duct assembly can be achieved by this is designed as a flat housing, and the fan housing is attached to a flat side of the flat housing, wherein the air outlet of the blower housing at an access opening opens to the pressure-side air channel.
  • This flat housing The two air ducts can be so juxtaposed in a simple way be arranged that the high-energy partial flow in optimally fed to the low-energy suction air stream can be.
  • the suction-side air duct in the flat housing could expediently at an outlet opening via a connecting channel or a connector housing with the air inlet the blower housing is connected, said outlet opening preferably at the access opening to the pressure side Air duct having flat side of the flat housing arranged is, so that the fan housing in a simple way
  • This flat side can be mounted and the suction side Connection in a structurally simple manner by anmontierbaren Realized connecting channel or a connection housing can be.
  • the exhaust opening of the air guide arrangement is preferably on the side facing away from the blower housing flat side as Flat housing formed air duct assembly attached and preferably flows in the case of a burner application a mixing pipe connected to the air guide arrangement. It can be designed as a flat housing air duct assembly advantageously simultaneously as a closure lid to serve a boiler.
  • Blower assembly has a blower housing 11 owning Radial fan 10, as it is for example in the presented at the beginning of the prior art and in various variants is described.
  • a cup-shaped impeller 12 rotatably mounted and is by a drive motor 13 on the outside of the blower housing 11 driven.
  • the blower housing 11 has a lateral axial air inlet 14 and a radial air outlet 15 at the end of the worm-like expanding fan housing 11th
  • the radial fan 10 is on a flat side as a flat housing 16 trained air guide assembly 17 mounted such that the air outlet 15 of the blower housing 11 at a Access opening 18 to a pressure-side air channel 19 in Flat housing 16 opens or aligned with this.
  • This pressure-side air channel 19 in the interior of the flat housing 16th forms a pressure chamber or a blow-out diffuser and is G-, U- or arcuately curved.
  • the cross section of this pressure-side air duct 19 extends from the access opening 18 from up to an output-side exhaust opening 20 towards substantially continuous, with sections also constant or temporarily decreasing diameter possible are.
  • the exhaust opening 20 is located on the side opposite to the access opening 18 side wall of the flat housing 16 and forms an access to a there attached mixing tube 21 and burner tube.
  • the diameter of the mixing tube 21 substantially corresponds the largest diameter at the end of the pressure-side air channel 19, during the exhaust opening 20 a smaller Diameter owns. In an alternative embodiment can the diameter of the exhaust opening 20 and the diameter of the mixing tube 21 correspond. Furthermore, it is possible in the Transition region between the pressure-side air channel 19 and the mixing tube 21 or in the mixing tube in conjunction with Mixing tubes known throttle device or a mixing element as described, for example, in EP-A-990 844 is.
  • a mixing tube 21 is of course only in the case of application in a burner, for example, heating burner required.
  • the entire flat housing 16 as a closing door or closing flap for the combustion chamber be formed of a heating boiler.
  • the formation of the pressure-side air channel 19 as a blow-out diffuser serves to increase the static fan pressure, wherein in a simpler embodiment, the pressure-side air duct 19 also a geometrically differently designed pressure chamber can form to increase the static pressure. Essential This is because of the cross-section of this pressure chamber opposite the enlarged of the air outlet 15.
  • Air duct 22 in the flat housing 16 has a inlet-side inflow opening 23_ and opens at an outlet opening 24, on the same flat side of the flat housing 16 is arranged as the access opening 18 to pressure-side air channel 19.
  • This outlet opening 24 is located in such a way next to the mounted fan housing 11, that the suction-side air passage 22 is below the fan housing 11 extends therethrough.
  • connection housing 25 To connect this outlet opening 24 with the air inlet 14 of the blower housing 11th serves a connection housing 25, with its flat side the side wall of the blower housing provided with the air inlet 14 11 abuts and with a narrow side of the outlet opening 24, so that the suction air flow through the suction-side air channel 22, the outlet opening 24, the connection housing 25 and the air inlet 14 in the fan housing 11 can flow in axially.
  • the suction-side air streams are for clarity as double arrows and the pressure-side air flows shown as bold arrows, wherein this representation in Figure 2 is problematic because the two air channels 19, 22 are arranged one behind the other.
  • the two air channels 19, 22 are so on the flat housing 16th arranged that the end portion of the pressure-side air channel 19 and the initial region of the suction-side air channel 22 directly run next to each other and only by an intermediate wall 26 are separated.
  • the pressure-side air channel 19 has as a result of its G, U or bow-like shape one Curvature.
  • the corresponding curved intermediate wall 26 is formed at this point by a pivotable air damper 27, through which a bypass from the pressure-side air channel 19 to suction-side air passage 22 formed with variable cross-section can be. Depending on the opening angle of this air damper 27 is more or less the high-energy flow in the air duct 19 partly the lower-energy suction-side flow in the air duct 22 mixed.
  • the air damper 27 with a non-illustrated Actuator, for example, provided a servomotor his.
  • the air flap 27 is as a flow guide member Designed to the high-energy air flow as possible loss of the air duct 22 to be able to perform.
  • damper 27 In place of a damper 27 can of course also another adjustment device for a connection opening between the two air channels 19, 22 occur, for example a sliding or swiveling aperture.
  • the invention is of course not on radial blower limited, but other types of blowers can be used and with a corresponding air duct 17 get connected. In principle, it is also possible to have a combined Blower and air duct housing to realize.

Abstract

The fan housing (11) is connected to an air guide assembly (17) in which an air duct (19) connected on the pressure side to the fan casing and having an outlet opening (20) on the outlet side is connectable through an adjustable opening to an air duct (22) attached on the suction side to the fan casing and having an inlet opening (23) on the inlet side so that a part of the air stream on the pressure side can be supplied to the air stream on the suction side. The opening between the air ducts can be adjusted by an adjustable air flap.

Description

Die Erfindung betrifft eine Gebläseanordnung, insbesondere Radialgebläseanordnung, mit einem ein Gebläselaufrad enthaltenden Gebläsegehäuse, das einen Lufteinlass und einen Luftauslass besitzt.The invention relates to a blower arrangement, in particular Radial fan arrangement, with a fan impeller containing Blower housing, which has an air inlet and an air outlet has.

Derartige, als Radialgebläse ausgebildete Gebläseanordnungen sind beispielsweise aus der DE-U-298 20 767, der DE-U-298 20 766, der EP-A-10 02 957, der EP-A-10 02 958, der EP-A-10 22 470 oder der EP-A-10 22 469 bekannt. Derartige Gebläse besitzen ein hohes Leistungsvermögen und eignen sich daher besonders als moderne Brennergebläse, die einen großen modulierbaren Leistungsbereich aufweisen müssen.Such, designed as a radial blower fan assemblies are for example from DE-U-298 20 767, the DE-U-298 20 766, EP-A-10 02 957, EP-A-10 02 958, the EP-A-10 22 470 or EP-A-10 22 469 known. Such blowers have high performance and are suitable Therefore, especially as a modern burner blower, which has a large must have modulatable power range.

Um die Luftleistung zu regulieren, verwendet man derzeit in den meisten Systemen eine Drosselregelung, d.h., der Luftstrom wird mittels eines Drosselglieds bei Bedarf gedrosselt, was ausnahmslos zu einer Strömungsstörung führt und somit auch mit einer Verschlechterung von Geräuschverhalten sowie Wirkungsgrad der Gebläseanordnung verbunden ist. Eine solche Drosselregelung ist z.B. aus der DE 195 48 800 A1 bekannt.To regulate the air flow, one currently uses in Most systems have throttle control, i.e., the airflow is throttled if necessary by means of a throttle member, which invariably leads to a flow disturbance and thus even with a deterioration of noise behavior as well Efficiency of the fan assembly is connected. Such Throttling control is e.g. known from DE 195 48 800 A1.

Aus der EP 0 588 072 A1 ist ein Gebläse mit einer schwenkbaren Klappe am Gebläseauslass bekannt, über die Umgebungsluft dem druckseitigen Luftstrom zugeführt werden kann. Diese Klappe ist im Gebläse selbst angeordnet und erfordert dadurch eine konstruktive Änderung am Gebläse. Darüber hinaus wird in nachteiliger Weise bei der Zufuhr von Umgebungsluft der druckseitige Luftstrom gedrosselt, was ebenfalls zu einer Verschlechterung von Geräuschverhalten und Wirkungsgrad führt.From EP 0 588 072 A1 there is a fan with a pivotable Flap at the blower outlet known about the ambient air can be supplied to the pressure-side air flow. This flap is located in the fan itself and requires thereby a constructive change on the blower. Furthermore becomes disadvantageous in the supply of ambient air the pressure-side air flow throttled, which also to a deterioration of noise behavior and Efficiency leads.

Eine Aufgabe der vorliegenden Erfindung besteht somit darin, ein Gebläse mit geringeren Energieverlusten und geräuscharmer zu regulieren.An object of the present invention is therefore to a fan with lower energy losses and quieter to regulate.

Diese Aufgabe wird erfindungsgemäß dadurch gelöst, dass das Gebläsegehäuse mit einer Luftführungsanordnung verbunden ist, in der ein druckseitig am Gebläsegehäuse angeschlossener Luftkanal mit einer ausgangsseitigen Ausblasöffnung und ein saugseitig am Gebläsegehäuse angeschlossener Luftkanal mit einer eingangsseitigen Zuströmöffnung über eine einstellbare Öffnung derart miteinander verbunden sind, dass ein Teil des druckseitigen Luftstroms dem saugseitigen Luftstrom zugeführt wird.This object is achieved in that the Blower housing is connected to an air guide assembly, in a pressure side connected to the blower housing Air duct with an outlet-side exhaust opening and a Air duct connected to the fan housing on the suction side an inlet-side inflow opening via an adjustable Opening are connected together such that a part of the pressure-side air flow supplied to the suction-side air flow becomes.

Die Vorteile dieser Anordnung gegenüber der herkömmlichen Drosselregulierung der Gebläseleistung sind vielseitig. Zum einen kann die erfindungsgemäße Bypassregulierung nahezu störungsfrei in der Gebläseanordnung mit integriert werden. Die Gebläseanordnung verfügt insgesamt über eine hohe Kennlinienstabilität, weil der für den Druckaufbau verantwortliche und empfindliche Ausblasbereich des beispielsweise als Spiralgehäuse ausgebildeten Gebläsegehäuses nahezu ungestört durch die Bypassanordnung bleibt. Die einstellbare Öffnung ermöglicht eine einfache und effektive Leistungsregelung. Im gesamten Leistungsbereich arbeitet die Gebläseanordnung effizient und geräuscharm. Die Luftführungsanordnung lässt sich leicht mit vorhandenen Gebläsen kombinieren, so dass diese im Wesentlichen konstruktiv nicht verändert zu werden brauchen.The advantages of this arrangement over the conventional Throttling regulation of the blower power are versatile. To the one can bypass regulation of the invention almost trouble-free be integrated in the blower arrangement with. The Blower arrangement has a high overall characteristic line stability, because the responsible for the pressure build-up and sensitive discharge of the example as a spiral housing trained fan housing almost undisturbed by the bypass arrangement remains. The adjustable opening allows a simple and effective power control. All in one Performance range, the blower arrangement works efficiently and quiet. The air duct arrangement can be easily combine with existing blowers so that these are in the Essentially constructive need not be changed.

Durch die in den Unteransprüchen aufgeführte Maßnahmen sind vorteilhafte Weiterbildungen und Verbesserungen der im Anspruch 1 angegebenen Gebläseanordnung möglich.By the measures listed in the dependent claims are advantageous developments and improvements in the claim 1 specified blower arrangement possible.

Die Öffnung zwischen dem druckseitigen und dem saugseitigen Luftkanal ist in vorteilhafter Weise durch ein Einstellorgan, insbesondere eine einstellbare Luftklappe einstellbar. Dabei ist die Öffnung und/oder das Einstellorgan zweckmäßigerweise derart ausgebildet, dass der druckseitig zugemischte Teilluftstrom zur Strömungsrichtung des saugseitigen Luftstroms ausgerichtet ist. Ein Teil der energiereichen Strömung wird dadurch gezielt der energiearmen Strömung im saugseitigen Luftkanal derart zugeführt, dass sich die Energie und Strömungsgeschwindigkeit der saugseitigen Strömung vergrößert. Dabei erfolgt diese Zuströmung verlust- und geräuscharm. Die Wirkung der Zuströmung kann noch dadurch verbessert werden, dass die Öffnung und/oder das Einstellorgan an der radialen Außenseite eines gekrümmten Bereichs des druckseitigen Luftkanals angeordnet ist, da beim Öffnen des Einstellorgans bzw. der Luftklappe die energiereiche Strömung automatisch durch Zentrifugalwirkung der energiearmen Strömung zugeführt wird.The opening between the pressure side and the suction side Air duct is advantageously by an adjusting member, In particular, an adjustable air damper adjustable. there is the opening and / or the adjusting expediently designed such that the pressure side admixed partial air flow to the flow direction of the suction-side air flow is aligned. Part of the high-energy flow is thereby specifically the low-energy flow in the suction side Air duct fed so that the energy and flow rate the suction-side flow increased. This inflow is loss and quiet. The Effect of the inflow can still be improved by that the opening and / or the adjusting member at the radial Outside of a curved portion of the pressure-side air channel is arranged, as when opening the adjustment or the air damper the high-energy flow automatically through Centrifugal effect of low-energy flow is supplied.

Durch die Luftklappe kann dabei die gewünschte Strömungsrichtung unterstützt werden.Through the air damper can thereby the desired flow direction get supported.

Vorteilhafter Weise kann das Einstellorgan mit einem die Luft- oder Gebläseleistung einstellenden oder regelnden Stellglied verbunden sein, so dass die Gebläseleistung bzw. eine Brennerleistung bei entsprechendem Einsatz automatisch geregelt werden kann.Advantageously, the adjusting with a the Air or blower power adjusting or regulating Actuator be connected so that the blower power or a burner output with appropriate use automatically can be regulated.

In einer weiteren vorteilhaften Ausgestaltung der Erfindung enthält die Luftführungsanordnung eine druckseitig am Gebläsegehäuse angeschlossene Druckkammer mit einer ausgangsseitigen Ausblasöffnung, wobei die Druckkammer einen gegenüber dem Luftauslass des Gebläsegehäuses wenigstens zum Teil größeren Querschnitt aufweist. Diese Druckkammer bewirkt in vorteilhafter Weise eine statische Druckerhöhung, die vor allem für den Einsatz bei Heizungsbrennern besonders vorteilhaft ist.In a further advantageous embodiment of the invention the air duct assembly includes a pressure side of the blower housing connected pressure chamber with an output side Blow-out, wherein the pressure chamber is opposite to the Air outlet of the blower housing at least partially larger Cross section has. This pressure chamber causes in an advantageous manner Way a static pressure increase, especially for the use of heating burners is particularly advantageous.

Diese Erhöhung des statischen Drucks kann noch dadurch verbessert bzw. verstärkt werden, wenn die Druckkammer als Ausblas-Diffusor mit einem sich zur Ausblasöffnung hin im Querschnitt erweiternden, insbesondere kontinuierlich erweiternden Luftkanal ausgebildet ist. Dieser Luftkanal ist zweckmäßigerweise G-, U- oder bogenartig gekrümmt, so dass ein sehr kompakter Diffusor erzielt werden kann, der sich vor allem für den Brennereinsatz eignet.This increase in static pressure can be further improved or amplified when the pressure chamber as Blow-out diffuser with a blow out in the Cross-section widening, in particular continuously widening Air duct is formed. This air duct is suitably curved G-, U- or bow-shaped, so that a very compact diffuser can be achieved that is in front everything is suitable for the burner use.

Eine sehr kompakte und konstruktiv günstige Anordnung der Luftführungsanordnung kann dadurch erreicht werden, dass diese als Flachgehäuse ausgebildet ist, und das Gebläsegehäuse an einer Flachseite des Flachgehäuses angebracht ist, wobei der Luftauslass des Gebläsegehäuses an einer Zugangsöffnung zum druckseitigen Luftkanal mündet. In diesem Flachgehäuse können die beiden Luftkanäle in einfacher Weise so nebeneinander angeordnet werden, dass der energiereiche Teilstrom in optimaler Weise dem energiearmen saugseitigen Luftstrom zugeführt werden kann.A very compact and structurally favorable arrangement of Air duct assembly can be achieved by this is designed as a flat housing, and the fan housing is attached to a flat side of the flat housing, wherein the air outlet of the blower housing at an access opening opens to the pressure-side air channel. In this flat housing The two air ducts can be so juxtaposed in a simple way be arranged that the high-energy partial flow in optimally fed to the low-energy suction air stream can be.

Der saugseitige Luftkanal im Flachgehäuse könnte zweckmäßigerweise an einer Austrittsöffnung, die über einen Verbindungskanal oder ein Verbindungsgehäuse mit dem Lufteinlass des Gebläsegehäuses verbunden ist, wobei diese Austrittsöffnung vorzugsweise an der die Zugangsöffnung zum druckseitigen Luftkanal aufweisenden Flachseite des Flachgehäuses angeordnet ist, so dass das Gebläsegehäuse in einfacher Weise an dieser Flachseite montiert werden kann und die saugseitige Verbindung in konstruktiv einfacher Weise durch einen anmontierbaren Verbindungskanal oder ein Verbindungsgehäuse realisiert werden kann.The suction-side air duct in the flat housing could expediently at an outlet opening via a connecting channel or a connector housing with the air inlet the blower housing is connected, said outlet opening preferably at the access opening to the pressure side Air duct having flat side of the flat housing arranged is, so that the fan housing in a simple way This flat side can be mounted and the suction side Connection in a structurally simple manner by anmontierbaren Realized connecting channel or a connection housing can be.

Die Ausblasöffnung der Luftführungsanordnung ist vorzugsweise an der vom Gebläsegehäuse wegweisenden Flachseite der als Flachgehäuse ausgebildeten Luftführungsanordnung angebracht und mündet im Falle einer Brenneranwendung vorzugsweise an einem an der Luftführungsanordnung angeschlossenen Mischrohr. Dabei kann die als Flachgehäuse ausgebildete Luftführungsanordnung in vorteilhafter Weise gleichzeitig als Verschlussdeckel eines Heizungskessels dienen.The exhaust opening of the air guide arrangement is preferably on the side facing away from the blower housing flat side as Flat housing formed air duct assembly attached and preferably flows in the case of a burner application a mixing pipe connected to the air guide arrangement. It can be designed as a flat housing air duct assembly advantageously simultaneously as a closure lid to serve a boiler.

Ein Ausführungsbeispiel der Erfindung ist in der Zeichnung dargestellt und in der nachfolgenden Beschreibung näher erläutert. Es zeigen:

Figur 1
eine Draufsicht auf eine Flachseite der als Flachgehäuse ausgebildeten Luftführungsanordnung,
Figur 2
eine schematische Seitenansicht der gesamten Gebläseanordnung und
Figur 3
eine Seitenansicht des auf das Flachgehäuse aufgesetzten Gebläsegehäuses.
An embodiment of the invention is illustrated in the drawing and explained in more detail in the following description. Show it:
FIG. 1
a plan view of a flat side of the formed as a flat housing air guide assembly,
FIG. 2
a schematic side view of the entire fan assembly and
FIG. 3
a side view of the fan housing mounted on the flat housing.

Die in den Figuren 1 bis 3 als Ausführungsbeispiel dargestellte Gebläseanordnung weist ein ein Gebläsegehäuse 11 besitzendes Radialgebläse 10 auf, wie es beispielsweise in dem eingangs angegebenen Stand der Technik dargestellt und in verschiedenen Varianten beschrieben ist. Im Gebläsegehäuse 10 ist ein topfartiges Laufrad 12 drehbar gelagert und wird durch einen Antriebsmotor 13 an der Außenseite des Gebläsegehäuses 11 angetrieben. Das Gebläsegehäuse 11 besitzt einen seitlichen axialen Lufteinlass 14 und einen radialen Luftauslass 15 am Ende des sich schneckenartig erweiternden Gebläsegehäuses 11.The illustrated in Figures 1 to 3 as an embodiment Blower assembly has a blower housing 11 owning Radial fan 10, as it is for example in the presented at the beginning of the prior art and in various variants is described. In the fan housing 10th is a cup-shaped impeller 12 rotatably mounted and is by a drive motor 13 on the outside of the blower housing 11 driven. The blower housing 11 has a lateral axial air inlet 14 and a radial air outlet 15 at the end of the worm-like expanding fan housing 11th

Das Radialgebläse 10 ist an einer Flachseite einer als Flachgehäuse 16 ausgebildeten Luftführungsanordnung 17 derart montiert, dass der Luftauslass 15 des Gebläsegehäuses 11 an einer Zugangsöffnung 18 zu einem druckseitigen Luftkanal 19 im Flachgehäuse 16 mündet bzw. mit dieser fluchtet. Dieser druckseitige Luftkanal 19 im Inneren des Flachgehäuses 16 bildet eine Druckkammer bzw. einen Ausblas-Diffusor und ist G-, U- oder bogenartig gekrümmt. Der Querschnitt dieses druckseitigen Luftkanals 19 erweitert sich von der Zugangsöffnung 18 aus bis zu einer ausgangsseitigen Ausblasöffnung 20 hin im Wesentlichen stetig, wobei auch Abschnitte mit gleichbleibendem oder sich vorübergehend verringerndem Durchmesser möglich sind. Die Ausblasöffnung 20 befindet sich an der zur Zugangsöffnung 18 gegenüberliegenden Seitenwandung des Flachgehäuses 16 und bildet einen Zugang zu einem dort angesetzten Mischrohr 21 bzw. Brennerrohr.The radial fan 10 is on a flat side as a flat housing 16 trained air guide assembly 17 mounted such that the air outlet 15 of the blower housing 11 at a Access opening 18 to a pressure-side air channel 19 in Flat housing 16 opens or aligned with this. This pressure-side air channel 19 in the interior of the flat housing 16th forms a pressure chamber or a blow-out diffuser and is G-, U- or arcuately curved. The cross section of this pressure-side air duct 19 extends from the access opening 18 from up to an output-side exhaust opening 20 towards substantially continuous, with sections also constant or temporarily decreasing diameter possible are. The exhaust opening 20 is located on the side opposite to the access opening 18 side wall of the flat housing 16 and forms an access to a there attached mixing tube 21 and burner tube.

Der Durchmesser des Mischrohrs 21 entspricht im Wesentlichen dem größten Durchmesser am Endbereich des druckseitigen Luftkanals 19, während der Ausblasöffnung 20 einen geringeren Durchmesser besitzt. In einer alternativen Ausgestaltung kann der Durchmesser der Ausblasöffnung 20 auch dem Durchmesser des Mischrohrs 21 entsprechen. Weiterhin ist es möglich, im Übergangsbereich zwischen dem druckseitigen Luftkanal 19 und dem Mischrohr 21 oder im Mischrohr eine in Verbindung mit Mischrohren bekannte Drosseleinrichtung bzw. ein Mischelement vorzusehen, wie dies beispielsweise in der EP-A-990 844 beschrieben ist.The diameter of the mixing tube 21 substantially corresponds the largest diameter at the end of the pressure-side air channel 19, during the exhaust opening 20 a smaller Diameter owns. In an alternative embodiment can the diameter of the exhaust opening 20 and the diameter of the mixing tube 21 correspond. Furthermore, it is possible in the Transition region between the pressure-side air channel 19 and the mixing tube 21 or in the mixing tube in conjunction with Mixing tubes known throttle device or a mixing element as described, for example, in EP-A-990 844 is.

Ein Mischrohr 21 ist selbstverständlich nur im Falle der Anwendung bei einem Brenner, beispielsweise Heizungsbrenner erforderlich. In diesem Falle kann auch das gesamte Flachgehäuse 16 als Verschlusstür oder Verschlussklappe für den Brennraum eines Heizungskessels ausgebildet sein.A mixing tube 21 is of course only in the case of application in a burner, for example, heating burner required. In this case, the entire flat housing 16 as a closing door or closing flap for the combustion chamber be formed of a heating boiler.

Die Ausbildung des druckseitigen Luftkanals 19 als Ausblas-Diffusor dient zur Erhöhung des statischen Gebläsedrucks, wobei in einer einfacheren Ausführung der druckseitige Luftkanal 19 auch eine geometrisch anders ausgestaltete Druckkammer bilden kann, um den statischen Druck zu erhöhen. Wesentlich ist hierfür, dass sich der Querschnitt dieser Druckkammer gegenüber dem des Luftauslasses 15 vergrößert.The formation of the pressure-side air channel 19 as a blow-out diffuser serves to increase the static fan pressure, wherein in a simpler embodiment, the pressure-side air duct 19 also a geometrically differently designed pressure chamber can form to increase the static pressure. Essential This is because of the cross-section of this pressure chamber opposite the enlarged of the air outlet 15.

Ein saugseitiger bzw. saugseitig an das Gebläsegehäuse 11 angeschlossener Luftkanal 22 im Flachgehäuse 16 besitzt eine eingangsseitige Zuströmöffnung 23_und mündet an einer Austrittsöffnung 24, die an der selben Flachseite des Flachgehäuses 16 angeordnet ist, wie die Zugangsöffnung 18 zum druckseitigen Luftkanal 19. Diese Austrittsöffnung 24 befindet sich derart neben dem anmontierten Gebläsegehäuse 11, dass der saugseitige Luftkanal 22 sich unter dem Gebläsegehäuse 11 hindurch erstreckt. Zur Verbindung dieser Austrittsöffnung 24 mit dem Lufteinlass 14 des Gebläsegehäuses 11 dient ein Verbindungsgehäuse 25, das mit seiner Flachseite an der mit dem Lufteinlass 14 versehenen Seitenwandung des Gebläsegehäuses 11 anliegt und mit einer Schmalseite der Austrittsöffnung 24 überdeckt, so dass der saugseitige Luftstrom durch den saugseitigen Luftkanal 22, die Austrittsöffnung 24, das Verbindungsgehäuse 25 und den Lufteinlass 14 in das Gebläsegehäuse 11 axial einströmen kann. Die saugseitigen Luftströme sind zur Verdeutlichung als Doppelpfeile und die druckseitigen Luftströme als fette Pfeile dargestellt, wobei diese Darstellung in Figur 2 dadurch problematisch ist, da die beiden Luftkanäle 19, 22 hintereinander angeordnet sind.A suction-side or suction side connected to the blower housing 11 Air duct 22 in the flat housing 16 has a inlet-side inflow opening 23_ and opens at an outlet opening 24, on the same flat side of the flat housing 16 is arranged as the access opening 18 to pressure-side air channel 19. This outlet opening 24 is located in such a way next to the mounted fan housing 11, that the suction-side air passage 22 is below the fan housing 11 extends therethrough. To connect this outlet opening 24 with the air inlet 14 of the blower housing 11th serves a connection housing 25, with its flat side the side wall of the blower housing provided with the air inlet 14 11 abuts and with a narrow side of the outlet opening 24, so that the suction air flow through the suction-side air channel 22, the outlet opening 24, the connection housing 25 and the air inlet 14 in the fan housing 11 can flow in axially. The suction-side air streams are for clarity as double arrows and the pressure-side air flows shown as bold arrows, wherein this representation in Figure 2 is problematic because the two air channels 19, 22 are arranged one behind the other.

Die beiden Luftkanäle 19, 22 sind derart am Flachgehäuse 16 angeordnet, dass der Endbereich des druckseitigen Luftkanals 19 und der Anfangsbereich des saugseitigen Luftkanals 22 direkt nebeneinander verlaufen und lediglich durch eine Zwischenwandung 26 getrennt sind. Der druckseitige Luftkanal 19 besitzt in Folge seiner G-, U- bzw. bogenartigen Gestalt eine Krümmung. Die entsprechend gekrümmte Zwischenwandung 26 wird an dieser Stelle durch eine schwenkbare Luftklappe 27 gebildet, durch die ein Bypass vom druckseitigen Luftkanal 19 zum saugseitigen Luftkanal 22 mit variablem Querschnitt gebildet werden kann. Je nach Öffnungswinkel dieser Luftklappe 27 wird mehr oder weniger die energiereiche Strömung im Luftkanal 19 teilweise der energieärmeren saugseitigen Strömung im Luftkanal 22 zugemischt. Hierdurch kann die Gebläseleistung und im Falle der Anwendung bei einem Brenner die Brennerleistung e-nergieverlust- und geräuscharm reguliert oder geregelt werden. Hierzu kann die Luftklappe 27 mit einem nicht dargestellten Stellglied, beispielsweise einem Stellmotor versehen sein. Die Luftklappe 27 ist dabei als Strömungsführungsorgan ausgestaltet, um die energiereiche Luftströmung möglichst verlustarm dem Luftkanal 22 zuführen zu können.The two air channels 19, 22 are so on the flat housing 16th arranged that the end portion of the pressure-side air channel 19 and the initial region of the suction-side air channel 22 directly run next to each other and only by an intermediate wall 26 are separated. The pressure-side air channel 19 has as a result of its G, U or bow-like shape one Curvature. The corresponding curved intermediate wall 26 is formed at this point by a pivotable air damper 27, through which a bypass from the pressure-side air channel 19 to suction-side air passage 22 formed with variable cross-section can be. Depending on the opening angle of this air damper 27 is more or less the high-energy flow in the air duct 19 partly the lower-energy suction-side flow in the air duct 22 mixed. This allows the blower power and in the Case of application to a burner the burner power e-nergieverlust and quietly regulated or regulated. For this purpose, the air damper 27 with a non-illustrated Actuator, for example, provided a servomotor his. The air flap 27 is as a flow guide member Designed to the high-energy air flow as possible loss of the air duct 22 to be able to perform.

An Stelle einer Luftklappe 27 kann selbstverständlich auch ein anderes Einstellorgan für eine Verbindungsöffnung zwischen den beiden Luftkanälen 19, 22 treten, beispielsweise eine verschiebbare oder verschwenkbare Blende.In place of a damper 27 can of course also another adjustment device for a connection opening between the two air channels 19, 22 occur, for example a sliding or swiveling aperture.

An Stelle eines Flachgehäuses 16 kann selbstverständlich auch eine andere Gehäuseform für die Luftführungsanordnung 17 treten. Wesentlich ist es dabei, dass eine Zumischung der energiereichen druckseitigen Luftströmung zur energiearmen saugseitigen Luftströmung in variabler Weise möglich ist.In place of a flat housing 16 can of course also another housing form for the air duct assembly 17 occur. It is essential that an admixture of high-energy pressure-side air flow to the low-energy suction side Air flow in a variable manner is possible.

Die Erfindung ist selbstverständlich nicht auf Radialgebläse beschränkt, vielmehr können auch andere Gebläseformen eingesetzt und mit einer entsprechenden Luftführungsanordnung 17 verbunden werden. Prinzipiell ist es auch möglich, ein kombiniertes Gebläse- und Luftführungsgehäuse zu realisieren.The invention is of course not on radial blower limited, but other types of blowers can be used and with a corresponding air duct 17 get connected. In principle, it is also possible to have a combined Blower and air duct housing to realize.

Claims (12)

  1. Fan assembly, in particular a radial fan assembly, with a fan housing (11) containing a fan impeller (12) and having an air intake (14) and an air outlet (15), characterised in that the fan housing (11) is connected to an air guidance assembly (17) in which an air passage (19) connected to the fan housing (11) on the outlet side is connected to an outflow orifice (20) on the outlet side, and an air passage (22) connected to the fan housing (11) on the inlet side is connected to an inflow orifice (23) on the inlet side, in such a way that a portion of the outlet-side airflow is fed to the inlet-side airflow.
  2. Fan assembly according to claim 1, characterised in that the adjustable orifice between the outlet-side (19) and the inlet-side air passage (22) is adjustable by means of an adjusting member (27) in the form of an adjustable air throttle.
  3. Fan assembly according to claim 1 or 2, characterised in that the adjustable orifice and/or the adjusting member (27) are so designed that the partial airflow added on the outlet-side is aligned towards the direction of flow of the inlet-side airflow.
  4. Fan assembly according to claim 3, characterised in that the adjustable orifice and/or the adjusting member (27) are/is located on the radial outer side of the outside wall (26) of a curved section of the outlet-side air passage (19).
  5. Fail assembly according to any of the preceding claims, characterised in that the adjusting member (27) is connected to an actuator which adjusts or regulates the air or fan output.
  6. Fan assembly according to any of the preceding claims, characterised in that the outlet-side air passage (19) is in the form of a pressure chamber (19) connected to the fan housing (11) on the outlet-side with an outflow orifice (20) on the outlet-side, wherein the pressure chamber has a larger cross-section, at least in part, relative to the air outlet (15) of the fan housing (11).
  7. Fan assembly according to claim 6, characterised in that the outlet-side air passage (19) is in the form of an outflow diffuser with an air passage increasing in cross-section, in particular increasing continuously, towards the outflow orifice (20).
  8. Fan assembly according to claim 7, characterised in that the air passage (19) is curved with a G- ,U- or bow shape.
  9. Fan assembly according to any of the preceding claims, characterised in that the air guidance assembly (17) is in the form of a flat housing (16), and that the fan housing (11) is attached to a flat side of the flat housing (16), with the air outlet (15) of the fan housing (11) emerging at an access opening (18) to the outlet-side air passage (19).
  10. Fan assembly according to claim 9, characterised in that the inlet-side air passage (22) in the flat housing (16) emerges at an outlet orifice (24) which is connected via a connecting passage or a connection housing (25) to the air intake (14) of the fan housing (11), with this outlet orifice (24) being located preferably on the flat side of the flat housing (16) which has the access opening (18) to the outlet-side air passage (19).
  11. Fan assembly according to any of the preceding claims, characterised in that the outflow orifice (20) of the air guidance assembly (17) is located on the flat side, facing away from the fan housing (11), of the air guidance assembly (17) which is in the form of a flat housing (16).
  12. Fan assembly according to claim 11, characterised in that the outflow orifice (20) leads to a mixer tube (21) connected to the air guidance assembly (17), and/or that the air guidance assembly (17) in the form of a flat housing (16) is designed as cover lid of a heating boiler.
EP00119951A 2000-09-14 2000-09-14 Fan device, in particular radial fan device Expired - Lifetime EP1188930B2 (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
AT00119951T ATE263925T1 (en) 2000-09-14 2000-09-14 BLOWER ARRANGEMENT, IN PARTICULAR RADIAL FAN ARRANGEMENT
EP00119951A EP1188930B2 (en) 2000-09-14 2000-09-14 Fan device, in particular radial fan device
DE50006003T DE50006003D1 (en) 2000-09-14 2000-09-14 Fan arrangement, in particular radial fan arrangement

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP00119951A EP1188930B2 (en) 2000-09-14 2000-09-14 Fan device, in particular radial fan device

Publications (3)

Publication Number Publication Date
EP1188930A1 EP1188930A1 (en) 2002-03-20
EP1188930B1 true EP1188930B1 (en) 2004-04-07
EP1188930B2 EP1188930B2 (en) 2007-06-13

Family

ID=8169829

Family Applications (1)

Application Number Title Priority Date Filing Date
EP00119951A Expired - Lifetime EP1188930B2 (en) 2000-09-14 2000-09-14 Fan device, in particular radial fan device

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EP (1) EP1188930B2 (en)
AT (1) ATE263925T1 (en)
DE (1) DE50006003D1 (en)

Families Citing this family (3)

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Publication number Priority date Publication date Assignee Title
EP1384606B1 (en) * 2002-07-25 2006-04-26 Behr GmbH & Co. KG Blower unit and method for ventilating a vehicle
EP1528258A1 (en) * 2003-10-31 2005-05-04 Punker GmbH & Co. Radial fan for a gas burner
CN100441880C (en) * 2005-05-13 2008-12-10 台达电子工业股份有限公司 Fan system

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Also Published As

Publication number Publication date
EP1188930A1 (en) 2002-03-20
ATE263925T1 (en) 2004-04-15
DE50006003D1 (en) 2004-05-13
EP1188930B2 (en) 2007-06-13

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