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EP0547535A1 - Radial fan for the delivery of a combustible gas mixture - Google Patents

Radial fan for the delivery of a combustible gas mixture Download PDF

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Publication number
EP0547535A1
EP0547535A1 EP92121220A EP92121220A EP0547535A1 EP 0547535 A1 EP0547535 A1 EP 0547535A1 EP 92121220 A EP92121220 A EP 92121220A EP 92121220 A EP92121220 A EP 92121220A EP 0547535 A1 EP0547535 A1 EP 0547535A1
Authority
EP
European Patent Office
Prior art keywords
radial fan
housing
insert
piece
bend
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP92121220A
Other languages
German (de)
French (fr)
Other versions
EP0547535B1 (en
Inventor
Reinhold Hopfensperger
Rudolf Tungl
Peter Goebel
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.)
Vaillant GmbH
Alcatel Lucent Deutschland AG
Original Assignee
Alcatel SEL AG
Joh Vaillant GmbH and Co
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Alcatel SEL AG, Joh Vaillant GmbH and Co filed Critical Alcatel SEL AG
Publication of EP0547535A1 publication Critical patent/EP0547535A1/en
Application granted granted Critical
Publication of EP0547535B1 publication Critical patent/EP0547535B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • 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

Definitions

  • the invention relates to a radial fan with a housing with a spiral inner contour and a closed impeller with backward curved blades, the diameter of which is very much larger than its flow exit width.
  • Such a radial fan is known (EP-A-410 271).
  • the medium to be conveyed can be a combustible gas mixture.
  • the combustible gas mixture is fed to the radial fan, for example via a pipeline, a so-called intake manifold.
  • pot-shaped housing and an intake manifold consisting of a cylindrical tube and a tube bend are formed in one piece in such a way that part of the tube bend is formed by a box-shaped part integrally connected to the housing, the tube bend and the tube replaced and an insert made of plastic is inserted into this.
  • Such an arrangement consisting of an intake manifold connected in one piece to the housing is gas-tight by design, so that complex sealing arrangements are unnecessary.
  • This arrangement has a shape which allows the production as a casting in a multi-part mold. In addition, it allows the use of smooth, continuously running surfaces for guiding the flow, so that there are no causes for the generation of noise.
  • FIG. 1 the part of the radial fan is shown insofar as it is important for the description of the invention.
  • a one-piece arrangement can be seen, which is composed of the flat cup-shaped housing 1, the cylindrical tube 2 and the tube bend 3.
  • the pipe 2 and the pipe bend 3 form part of the intake manifold.
  • the inner pipe bend is missing in the arrangement mentioned above. It is - as is clear when viewing FIGS. 1 and 2 together - replaced by the connecting part 4.
  • the insert 5 is fastened, which consists of the inflow nozzle 6 and the supplementary piece 7 integrally connected thereto.
  • the insert 5 is made of plastic.
  • the supplementary piece 7 fills out the connecting part 4 and completes the pipe bend 3.
  • FIG. 1 The position of the impeller 8 in the housing 1 is also illustrated in FIG. 1, the hub 9 of which is attached to the drive shaft of an electric motor (not shown).
  • the electric motor itself is fastened to a cover (likewise not shown) with which the rear side of the housing 1, which is arranged on the left in FIG. 1, is closed.
  • the insert 5 is at its lower end, as can be seen from Fig. 2, held in the box-shaped part 4 by means of dovetail guides 10.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)
  • Jet Pumps And Other Pumps (AREA)

Abstract

A radial fan having an intake elbow (2, 3, 7) is to be provided, in which the casing (1) with the intake elbow (2, 3, 7) is designed in an absolutely gas-tight manner, in which the interior of the intake elbow (2, 3, 7) is designed aerodynamically, and in which the casing (1) and the intake elbow (2, 3, 7) can be produced by casting. The casing and the intake elbow are constructed in such a way that they form a self-contained and yet castable arrangement which in its interior is complemented by a plastic part (7). <IMAGE>

Description

Die Erfindung betrifft ein Radialgebläse mit einem Gehäuse mit spiralförmiger Innenkontur und einem geschlossenen Gebläserad mit rückwärts gekrümmten Schaufeln, dessen Druchmesser sehr viel größer als seine Strömungsaustrittsbreite ist.The invention relates to a radial fan with a housing with a spiral inner contour and a closed impeller with backward curved blades, the diameter of which is very much larger than its flow exit width.

Ein solches Radialgebläse ist bekannt (EP-A-410 271). Im Zusammenhang mit dem bekannten Radialgebläse ist erwähnt, daß es sich bei dem zu fördernden Medium um ein brennbares Gasgemisch handeln kann. In einem solchen Anwendungsfall wird das brennbare Gasgemisch dem Radialgebläse beispielsweise über eine Rohrleitung, einen sogenannten Ansaugkrümmer, zugeführt.Such a radial fan is known (EP-A-410 271). In connection with the known radial fan it is mentioned that the medium to be conveyed can be a combustible gas mixture. In such an application, the combustible gas mixture is fed to the radial fan, for example via a pipeline, a so-called intake manifold.

Das der Erfindung zugrunde liegende technische Problem besteht darin, einen Ansaugkrümmer mit folgenden Eigenschaften zu schaffen:

  • 1. Er soll gasdicht sein.
  • 2. Er soll in einfacher Weise als Gußteil hergestellt werden können.
  • 3. Er soll strömungsgünstig ausgebildet sein, damit durch Vorsprünge, Kanten oder dgl. keine Geräusche entstehen.
The technical problem underlying the invention is to create an intake manifold with the following properties:
  • 1. It should be gas-tight.
  • 2. It should be able to be produced in a simple manner as a casting.
  • 3. It should be aerodynamically designed so that no noise is produced by projections, edges or the like.

Dieses technische Problem ist erfindungsgemäß dadurch gelöst, daß das topfförmige Gehäuse und ein aus einem zylindrischen Rohr und aus einem Rohrbogen bestehender Ansaugkrümmer in der Weise einstückig ausgebildet sind, daß ein Teil des Rohrbogens durch ein kastenförmiges mit dem Gehäuse dem Rohrbogen und dem Rohr einstückig verbundenes Teil ersetzt und in dieses ein Einsatzstück aus Kunststoff eingesetzt ist.This technical problem is solved according to the invention in that the pot-shaped housing and an intake manifold consisting of a cylindrical tube and a tube bend are formed in one piece in such a way that part of the tube bend is formed by a box-shaped part integrally connected to the housing, the tube bend and the tube replaced and an insert made of plastic is inserted into this.

Eine solche aus einem einstückig mit dem Gehäuse verbundenen Ansaugkrümmer bestehende Anrodnung ist konstruktionsbedingt gasdicht, so daß sich aufwendige Abdichtungsanordnungen erübrigen. Diese Anordnung weist eine Gestalt auf, welche die Herstellung als Gußteil in einer mehrteiligen Gußform erlaubt. Außerdem gestattet sie die Verwendung von glatten, stetig verlaufenden Flächen für die Führung der Strömung, so daß keine Ursachen für das Entstehen von Geräuschen vorhanden sind.Such an arrangement consisting of an intake manifold connected in one piece to the housing is gas-tight by design, so that complex sealing arrangements are unnecessary. This arrangement has a shape which allows the production as a casting in a multi-part mold. In addition, it allows the use of smooth, continuously running surfaces for guiding the flow, so that there are no causes for the generation of noise.

Vorteilhafte Einzelheiten der Erfindung sind in den Ansprüchen 2 und 3 enthalten. Sie ist nachstehend anhand eines in den Figuren 1 und 2 gezeigten Ausführungsbeispieles erläutert. Es zeigen:

Fig. 1
ein mit den erfindungsgemäßen Merkmalen versehenes Radialgebläse - teilweise im Längsschnitt - und
Fig. 2
die Draufsicht auf die Rückseite des Radialgebläses gemäß Fig. 1.
Advantageous details of the invention are contained in claims 2 and 3. It is explained below using an exemplary embodiment shown in FIGS. 1 and 2. Show it:
Fig. 1
a provided with the features of the invention radial fan - partially in longitudinal section - and
Fig. 2
the top view of the rear of the radial fan according to FIG. 1st

In Fig. 1 ist der Teil des Radialgebläses gezeigt, soweit er für die Beschreibung der Erfindung von Bedeutung ist. Es ist eine einstückige Anordnung zu erkennen, welche sich aus dem flachen topfförmigen Gehäuse 1, dem zylindrischen Rohr 2 und dem Rohrbogen 3 zusammensetzt. Das Rohr 2 und der Rohrbogen 3 bilden einen Teil des Ansaugkrümmers Wie Fig. 1 verdeutlicht, fehlt bei der vorstehend erwähnten Anordnung der innere Rohrbogen. Er ist - wie bei gemeinsamer Betrachtung von Fig. 1 und Fig. 2 deutlich wird - durch das Verbindungsteil 4 ersetzt. In der zum Gehäuse 1 hin gerichteten Öffnung des Rohrbogens 3 ist das Einsatzstück 5 befestigt, welches aus der Einströmdüse 6 und dem einstückig mit diesem verbundenen Ergänzungsstück 7 besteht. Das Einsatzstück 5 besteht aus Kunststoff. Das Ergänzungsstück 7 füllt das Verbindungsteil 4 aus und vervollständigt den Rohrbogen 3.In Fig. 1 the part of the radial fan is shown insofar as it is important for the description of the invention. A one-piece arrangement can be seen, which is composed of the flat cup-shaped housing 1, the cylindrical tube 2 and the tube bend 3. The pipe 2 and the pipe bend 3 form part of the intake manifold. As shown in FIG. 1, the inner pipe bend is missing in the arrangement mentioned above. It is - as is clear when viewing FIGS. 1 and 2 together - replaced by the connecting part 4. In the opening of the pipe bend 3 directed towards the housing 1, the insert 5 is fastened, which consists of the inflow nozzle 6 and the supplementary piece 7 integrally connected thereto. The insert 5 is made of plastic. The supplementary piece 7 fills out the connecting part 4 and completes the pipe bend 3.

In Fig. 1 ist auch die Lage des Gebläserades 8 im Gehäuse 1 verdeutlicht, dessen Nabe 9 an der Antriebswelle eines - nicht gezeigten - Elektromotors befestigt ist. Der Elektromotor selbst ist an einem - gleichfalls nicht gezeigten - Deckel befestigt, mit dem die - in Fig. 1 links angeordnete - Rückseite des Gehäuses 1 verschlossen ist. Das Einsatzstück 5 ist an seinem unteren Ende, wie aus Fig. 2 zu erkennen, mittels Schwalbenschwanzführungen 10 in dem kastenförmigen Teil 4 gehalten.The position of the impeller 8 in the housing 1 is also illustrated in FIG. 1, the hub 9 of which is attached to the drive shaft of an electric motor (not shown). The electric motor itself is fastened to a cover (likewise not shown) with which the rear side of the housing 1, which is arranged on the left in FIG. 1, is closed. The insert 5 is at its lower end, as can be seen from Fig. 2, held in the box-shaped part 4 by means of dovetail guides 10.

Im Betriebszustand des in den Figuren 1 und 2 gezeigten Radialgebläses mit Ansaugkrümmer wird das brennbare Gasgemisch über das zylindrische Rohr 2 zugeführt und aus der Öffnung 11 in dem Anschlußstutzen 12 wieder ausgeblasen.In the operating state of the radial blower with intake manifold shown in FIGS. 1 and 2, the combustible gas mixture is supplied via the cylindrical tube 2 and blown out of the opening 11 in the connecting piece 12 again.

Claims (3)

Radialgebläse mit einem Gehäuse mit spiralförmiger Innenkontur und einem geschlossenen Gebläserad mit rückwärts gekrümmten Schaufeln, dessen Druchmesser sehr viel größer als seine Strömungsaustrittsbreite ist, dadurch gekennzeichnet, daß das topfförmige Gehäuse (1) und ein aus einem zylindrischen Rohr (2) und aus einem Rohrbogen (3) bestehender Ansaugkrümmer in der Weise einstückig ausgebildet sind, daß ein Teil des Rohrbogens (3) durch ein mit dem Gehäuse (1), dem Rohrbogen (3) und dem Rohr (2) einstückig verbundenen Verbindungsteil (4) ersetzt und in dieses ein Einsatzstück (5) aus Kunststoff eingesetzt ist.Radial blower with a housing with a spiral-shaped inner contour and a closed impeller with backward curved blades, the diameter of which is much larger than its flow outlet width, characterized in that the cup-shaped housing (1) and a cylinder tube (2) and a tube bend ( 3) existing intake manifold are formed in one piece in such a way that part of the pipe bend (3) is replaced by a connecting part (4) connected in one piece to the housing (1), the pipe bend (3) and the pipe (2) and into this Insert (5) made of plastic is inserted. Radialgebläse nach Anspruch 1, dadurch gekennzeichnet, daß das Einsatzstück (5) aus einer kreisförmigen, am Ende des Rohrbogens (3) befestigten, in die Ansaugöffnung des Gebläserades hineinragenden Einströmdüse (6) besteht, mit der einstückig ein das Verbindungsteil (4) ausfüllende und den Rohrbogen vervollständigende Ergänzungsstück (7) verbunden ist.Radial blower according to claim 1, characterized in that the insert (5) consists of a circular inflow nozzle (6) which is attached to the end of the pipe bend (3) and protrudes into the suction opening of the impeller and with which the connecting part (4) is filled in and the supplementary piece (7) completing the pipe bend is connected. Radialgebläse nach den Ansprüchen 1 und 2, dadurch gekennzeichnet, daß das Einsatzstück (5) im Boden des Verbindungsteils (4) durch wenigstens eine Führung (10) gehalten ist.Radial fan according to claims 1 and 2, characterized in that the insert (5) is held in the bottom of the connecting part (4) by at least one guide (10).
EP92121220A 1991-12-14 1992-12-12 Radial fan for the delivery of a combustible gas mixture Expired - Lifetime EP0547535B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE4141360 1991-12-14
DE4141360A DE4141360A1 (en) 1991-12-14 1991-12-14 RADIAL BLOWER FOR CONVEYING A COMBUSTIBLE GAS MIXTURE

Publications (2)

Publication Number Publication Date
EP0547535A1 true EP0547535A1 (en) 1993-06-23
EP0547535B1 EP0547535B1 (en) 1996-02-07

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
EP92121220A Expired - Lifetime EP0547535B1 (en) 1991-12-14 1992-12-12 Radial fan for the delivery of a combustible gas mixture

Country Status (3)

Country Link
EP (1) EP0547535B1 (en)
AT (1) ATE134025T1 (en)
DE (2) DE4141360A1 (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1473465A1 (en) * 2003-04-30 2004-11-03 Holset Engineering Company Limited Compressor
US7686586B2 (en) 2004-02-21 2010-03-30 Holset Engineering Company, Limited Compressor
CN115076137A (en) * 2022-07-19 2022-09-20 威海克莱特菲尔风机股份有限公司 High-efficiency low-noise centrifugal fan for offshore wind power cooling system

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104595238B (en) * 2015-01-21 2015-11-25 扬州大学 The serial oblique inlet passage of hydraulic performance excellence and application process thereof

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR863235A (en) * 1939-09-13 1941-03-27 Improvements in wind tunnels and rotary vacuum cleaners
US3434653A (en) * 1967-09-19 1969-03-25 Jack Burnbaum Combination motor and blower
FR2529264A1 (en) * 1982-06-23 1983-12-30 Ivat Color Snc Ugo Becchio C Centrifugal pump for fluids - has circular impeller chamber greater than twice diameter of impeller
EP0410271A2 (en) * 1989-07-22 1991-01-30 Alcatel SEL Aktiengesellschaft Feed device for gaseous medium

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE397482C (en) * 1921-06-15 1924-06-21 Frantisek Pechan Centrifugal compressor
US3489340A (en) * 1968-04-16 1970-01-13 Garrett Corp Centrifugal compressor

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR863235A (en) * 1939-09-13 1941-03-27 Improvements in wind tunnels and rotary vacuum cleaners
US3434653A (en) * 1967-09-19 1969-03-25 Jack Burnbaum Combination motor and blower
FR2529264A1 (en) * 1982-06-23 1983-12-30 Ivat Color Snc Ugo Becchio C Centrifugal pump for fluids - has circular impeller chamber greater than twice diameter of impeller
EP0410271A2 (en) * 1989-07-22 1991-01-30 Alcatel SEL Aktiengesellschaft Feed device for gaseous medium

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1473465A1 (en) * 2003-04-30 2004-11-03 Holset Engineering Company Limited Compressor
US7229243B2 (en) 2003-04-30 2007-06-12 Holset Engineering Company, Limited Compressor
CN100394038C (en) * 2003-04-30 2008-06-11 奥尔塞特工程有限公司 Compressor
US7686586B2 (en) 2004-02-21 2010-03-30 Holset Engineering Company, Limited Compressor
CN115076137A (en) * 2022-07-19 2022-09-20 威海克莱特菲尔风机股份有限公司 High-efficiency low-noise centrifugal fan for offshore wind power cooling system

Also Published As

Publication number Publication date
DE59205300D1 (en) 1996-03-21
DE4141360A1 (en) 1993-06-17
ATE134025T1 (en) 1996-02-15
EP0547535B1 (en) 1996-02-07

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