EP0627561A1 - Radial blorier - Google Patents
Radial blorier Download PDFInfo
- Publication number
- EP0627561A1 EP0627561A1 EP94104635A EP94104635A EP0627561A1 EP 0627561 A1 EP0627561 A1 EP 0627561A1 EP 94104635 A EP94104635 A EP 94104635A EP 94104635 A EP94104635 A EP 94104635A EP 0627561 A1 EP0627561 A1 EP 0627561A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- edge
- housing
- tongue
- impeller
- casing
- 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
Links
Images
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
- F04D29/66—Combating cavitation, whirls, noise, vibration or the like; Balancing
- F04D29/661—Combating cavitation, whirls, noise, vibration or the like; Balancing especially adapted for elastic fluid pumps
-
- 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
- F04D29/422—Discharge tongues
Definitions
- the invention relates to a radial fan according to the preamble of patent claim 1.
- the object of the invention is to provide a radial fan which has a further reduced noise level with the same delivery rate.
- this object is achieved by a radial fan solved with the features of claim 1.
- the pressure surge formation is significantly reduced due to a kind of smooth transition between the housing tongue edge and the outer edge of a wing, which leads to a significantly reduced noise formation with the same distance between the tongue edge and the outer edge of the wing.
- the housing tongue edge is preferably bent in the tongue plane in such a way that it has the smallest slope measured from the impeller plane where the greatest volume flow exits the impeller.
- FIG. 1 and 2 show a radial fan with a spiral housing 1, which begins at a housing tongue 2 and in which a driven impeller 3 with blades 4 rotates.
- the edge 5 of the housing tongue 2 is inclined and curved with respect to the outer edges 6 of the impeller blades 4 which are parallel to the axis here.
- the inclination or the course of the tongue edge is chosen so that the tongue edge covers at least a distance between two successive impeller edges, preferably several such distances. In the case of the embodiment shown in FIG.
- the housing tongue edge is curved in an S-shape, the inclination of the tongue edge with respect to the outer edge of the impeller in the region of the center plane of the impeller, which is the area with the largest volume flow, is largest and decreases at the edges, in the direction of the housing faces.
- Fig. 3 shows a concave curved tongue edge 5, the inclination of the impeller axis or the outer edges of the impeller blades 4 decreases from the suction side.
- FIG. 4 shows a convexly curved tongue edge 5 with an increasing inclination towards the outer edge of an impeller blade 4 starting from the suction side.
- FIG. 5 shows a housing tongue edge 5 which, as in FIG. 2, is curved in an S-shape, but in contrast to FIG. 2 with the greatest inclination in relation to the outer edges 6 of the impeller blades 4 in the area of the housing end faces and the smallest inclination in the area of the impeller center plane.
- FIGS. 6 to 9 show double radial fans with tongue edge structures which essentially result from a symmetrical addition of the shapes shown in FIGS. 2 to 5.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
Gegenstand der Erfindung ist ein Radialgebläse mit einem Spiralgehäuse 1, welches an einer den Mantel des Spiralgehäuses fortsetzenden Gehäusezunge 2 mit einer Kante 5 an ihrem freien Ende beginnt, die zusammen mit dem Endbereich der Mantels des Spiralgehäuses eine Austrittsöffnung des Gebläses bestimmt, einem in dem Spiralgehäuse aufgenommenen Laufrad 3, welches Flügel 4 aufweist, die mit ihren von der Laufradachse fernen Außenkanten 6 an der Gehäusezungenkante 5, vorbeistreichen, die gegenüber der Außenkante 6 der Flügel 4 geneigt ist und dabei mindestens einen Abstand zweier aufeinanderfolgender Außenkanten 6 überdeckt, wobei die Gehäusezungenkante 5 gekrümmt ist. The invention relates to a radial fan with a spiral housing 1, which begins on a housing tongue 2 which continues the jacket of the spiral housing with an edge 5 at its free end which, together with the end region of the jacket of the spiral housing, defines an outlet opening of the fan, one in the spiral housing Recorded impeller 3, which has vanes 4 which, with their outer edges 6 remote from the impeller axis, sweep past the housing tongue edge 5, which is inclined with respect to the outer edge 6 of the vanes 4 and thereby covers at least a distance between two successive outer edges 6, the housing tongue edge 5 is curved.
Description
Die Erfindung betrifft ein Radialgebläse gemäß dem Oberbegriff des Patentanspruchs 1.The invention relates to a radial fan according to the preamble of
Bei bekannten Radialgebläsen dieser Art (DE-PS 319 721) ist die geneigte Kante gerade. Dies führt beim Vorbeistreichen der Flügel an der Zungenkante zwar zu einer verminderten Geräuschentwicklung gegenüber dem Fall einer zur Außenkante des vorbeistreichenden Flügels parallelen Gehäusezungenkante. Das Ergebnis ist jedoch noch nicht völlig zufriedenstellend. Der Geräuschpegel läßt sich durch Abrücken der Gehäusezungenkante von der Laufradkante, also durch eine Vergrößerung des Gehäuseradiuses im Verhältnis zum Laufradradius vermindern, was aber wiederum der Förderleistung des Gebläses abträglich ist.In known radial fans of this type (DE-PS 319 721) the inclined edge is straight. When the wings pass the tongue edge, this leads to a reduced noise development compared to the case of a housing tongue edge parallel to the outer edge of the passing wing. However, the result is still not entirely satisfactory. The noise level can be reduced by moving the edge of the housing tongue away from the edge of the impeller, that is to say by increasing the radius of the housing in relation to the radius of the impeller, which in turn is detrimental to the delivery capacity of the fan.
Aufgabe der Erfindung ist die Schaffung eines Radialgebläses, das bei gleicher Förderleistung einen weiter verminderten Geräuschpegel aufweist.The object of the invention is to provide a radial fan which has a further reduced noise level with the same delivery rate.
Diese Aufgabe wird erfindungsgemäß durch ein Radialgebläse mit den Merkmalen des Patentanspruchs 1 gelöst.According to the invention, this object is achieved by a radial fan solved with the features of
Durch die gekrümmte Ausbildung der geneigten Gehäusezungenkante ist wegen einer Art gleitenden Übergangs zwischen Gehäusezungenkante und Außenkante eines Flügels die Druckstoßausbildung deutlich gemindert, was bei gleichem Abstand zwischen Zungenkante und Flügelaußenkante zu einer deutlich geminderten Geräuschbildung führt.Due to the curved design of the inclined edge of the housing tongue, the pressure surge formation is significantly reduced due to a kind of smooth transition between the housing tongue edge and the outer edge of a wing, which leads to a significantly reduced noise formation with the same distance between the tongue edge and the outer edge of the wing.
Bevorzugt ist die Gehäusezungenkante in der Zungenebene so gebogen, daß sie die geringste Steigung gemessen von der Laufradebene aus dort hat, wo der größte Volumenstrom aus dem Laufrad austritt.The housing tongue edge is preferably bent in the tongue plane in such a way that it has the smallest slope measured from the impeller plane where the greatest volume flow exits the impeller.
Im folgenden werden bevorzugte Ausführungsformen anhand der beigefügten Zeichnung beschrieben. Auf dieser zeigt bzw. zeigen:
- Fig. 1 ein Radialgebläse, schematisch von der Seite,
- Fig. 2 das Gebläse der Fig. 1 im Schnitt längs der Linie II - II der Fig. 1,
- Fig. 3 bis 5 demjenigen der Fig. 2 entsprechende Schnitte mit anders geformten Gehäusezungenkanten, und
- Fig. 6 bis 9 Schnitte entsprechend demjenigen der Fig. 2 für Doppelradialgebläse.
- 1 is a radial fan, schematically from the side,
- 2 shows the blower of FIG. 1 in section along the line II - II of FIG. 1,
- 3 to 5 corresponding to that of FIG. 2 sections with differently shaped housing tongue edges, and
- Fig. 6 to 9 sections corresponding to that of FIG. 2 for double radial fans.
Fig. 1 und 2 zeigen ein Radialgebläse mit einem spiralförmigen Gehäuse 1, das an einer Gehäusezunge 2 beginnt und in dem sich ein angetriebenes Laufrad 3 mit Flügeln 4 dreht. Die Kante 5 der Gehäusezunge 2 ist gegenüber den hier achsenparallelen Außenkanten 6 der Laufradflügel 4 geneigt und gekrümmt. Die Neigung bzw. der Verlauf der Zungenkante ist dabei so gewählt, daß die Zungenkante mindestens einen Abstand zweier aufeinanderfolgender Laufradkanten, vorzugsweise mehrere solche Abstände, überdeckt. Im Falle der in Fig. 2 gezeigten Ausführungsform ist die Gehäusezungenkante S-förmig geschwungen, wobei die Neigung der Zungenkante in Bezug auf die Laufradaußenkanten im Bereich der Laufradmittenebene, der hier der Bereich des größten Volumenstroms ist, am größten ist und an den Rändern, in Richtung der Gehäusestirnflächen, abnimmt. Fig. 3 zeigt eine konkav gekrümmte Zungenkante 5, deren Neigung gegenüber der Laufradachse bzw. den Außenkanten der Laufradflügel 4 von der Ansaugseite ausgehend abnimmt. Fig. 4 zeigt eine konvex gekrümmte Zungenkante 5 mit von der Ansaugseite ausgehend zunehmender Neigung gegenüber der Außenkante eines Laufradflügels 4. Fig. 5 zeigt eine Gehäusezungenkante 5, die wie in Fig. 2 S-förmig geschwungen ist, allerdings zum Unterschied von Fig. 2 mit der größten Neigung gegenüber den Außenkanten 6 der Laufradflügel 4 im Bereich der Gehäusestirnseiten und der kleinsten Neigung im Bereich der Laufradmittenebene.1 and 2 show a radial fan with a
Die Fig. 6 bis 9 zeigen Doppelradialgebläse mit Zungenkantenstrukturen, die sich im wesentlichen aus einer symmetrischen Ergänzung der in den Fig. 2 bis 5 dargestellten Formen ergeben.6 to 9 show double radial fans with tongue edge structures which essentially result from a symmetrical addition of the shapes shown in FIGS. 2 to 5.
Claims (2)
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19934313617 DE4313617C2 (en) | 1993-04-26 | 1993-04-26 | Radial fan |
DE4313617 | 1993-04-26 |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0627561A1 true EP0627561A1 (en) | 1994-12-07 |
EP0627561B1 EP0627561B1 (en) | 1998-06-10 |
Family
ID=6486395
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP19940104635 Expired - Lifetime EP0627561B1 (en) | 1993-04-26 | 1994-03-23 | Radial blorier |
Country Status (2)
Country | Link |
---|---|
EP (1) | EP0627561B1 (en) |
DE (1) | DE4313617C2 (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2005111428A1 (en) | 2004-04-29 | 2005-11-24 | American Standard International Inc. | Improved cutoff for fan or blower |
CN110939607A (en) * | 2018-09-25 | 2020-03-31 | 开利公司 | Fan shell, fan and operation system provided with fan |
Families Citing this family (12)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP3482668B2 (en) * | 1993-10-18 | 2003-12-22 | 株式会社日立製作所 | Centrifugal fluid machine |
JPH09510527A (en) * | 1994-03-19 | 1997-10-21 | カーエスベー・アクチエンゲゼルシャフト | Noise reduction device for rotor pump |
DE19861061C2 (en) * | 1998-03-18 | 2003-07-03 | Motoren Ventilatoren Gmbh | radial fans |
DE19811877C2 (en) * | 1998-03-18 | 2001-09-13 | Motoren Ventilatoren Gmbh | Radial fan |
DE29920373U1 (en) * | 1999-11-19 | 2000-01-13 | Motoren Ventilatoren Gmbh | Housing for a fan, in particular a radial fan |
FR2875560B1 (en) * | 2004-09-23 | 2006-12-01 | Renault Sas | REDUCED NOISE CENTRIFUGAL FAN FOR A VENTILATION SYSTEM OF A MOTOR VEHICLE |
US7597541B2 (en) * | 2005-07-12 | 2009-10-06 | Robert Bosch Llc | Centrifugal fan assembly |
DE102007055507A1 (en) | 2007-11-21 | 2009-06-04 | Georg Emanuel Koppenwallner | Bevel lip spiral |
DE102008051362A1 (en) | 2008-10-15 | 2010-04-22 | Behr Gmbh & Co. Kg | Radial blower housing |
CN101975197A (en) * | 2010-07-28 | 2011-02-16 | 苏州顶裕节能设备有限公司 | Fan noise reduction device |
FR3056287B1 (en) * | 2016-09-19 | 2019-05-10 | Valeo Systemes Thermiques | AIR INTAKE HOUSING AND HEATING, VENTILATION AND / OR AIR CONDITIONING INSTALLATION FOR A CORRESPONDING MOTOR VEHICLE |
WO2023135783A1 (en) * | 2022-01-17 | 2023-07-20 | 三菱電機株式会社 | Centrifugal blower and air conditioning device |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE319721C (en) * | 1920-03-15 | Ludwig Hartwagner | Centrifugal fan with worm housing | |
CH278711A (en) * | 1949-09-30 | 1951-10-31 | Wegmann Ernst | Fan with spiral casing. |
DE1077368B (en) * | 1957-11-21 | 1960-03-10 | Westerasmaskiner Ab | Centrifugal fan of large width relative to the impeller diameter |
JPS54122415A (en) * | 1978-03-15 | 1979-09-22 | Matsushita Electric Ind Co Ltd | Blower |
DE8808417U1 (en) * | 1988-06-30 | 1989-10-26 | Siemens AG, 1000 Berlin und 8000 München | Spiral blower |
-
1993
- 1993-04-26 DE DE19934313617 patent/DE4313617C2/en not_active Expired - Fee Related
-
1994
- 1994-03-23 EP EP19940104635 patent/EP0627561B1/en not_active Expired - Lifetime
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE319721C (en) * | 1920-03-15 | Ludwig Hartwagner | Centrifugal fan with worm housing | |
CH278711A (en) * | 1949-09-30 | 1951-10-31 | Wegmann Ernst | Fan with spiral casing. |
DE1077368B (en) * | 1957-11-21 | 1960-03-10 | Westerasmaskiner Ab | Centrifugal fan of large width relative to the impeller diameter |
JPS54122415A (en) * | 1978-03-15 | 1979-09-22 | Matsushita Electric Ind Co Ltd | Blower |
DE8808417U1 (en) * | 1988-06-30 | 1989-10-26 | Siemens AG, 1000 Berlin und 8000 München | Spiral blower |
Non-Patent Citations (1)
Title |
---|
PATENT ABSTRACTS OF JAPAN vol. 3, no. 148 (M - 083) 7 December 1979 (1979-12-07) * |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2005111428A1 (en) | 2004-04-29 | 2005-11-24 | American Standard International Inc. | Improved cutoff for fan or blower |
CN101105186B (en) * | 2004-04-29 | 2010-11-03 | 特灵国际有限公司 | Improved cutoff for fan or blower |
CN1788167B (en) * | 2004-04-29 | 2012-05-23 | 特灵国际有限公司 | Improved cutoff and fan or blower provided with the cutoff |
CN110939607A (en) * | 2018-09-25 | 2020-03-31 | 开利公司 | Fan shell, fan and operation system provided with fan |
Also Published As
Publication number | Publication date |
---|---|
DE4313617C2 (en) | 1996-04-25 |
EP0627561B1 (en) | 1998-06-10 |
DE4313617C1 (en) | 1994-05-11 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
EP0112932B1 (en) | Radial ventilator with backwards-curved profiled blades | |
EP0627561A1 (en) | Radial blorier | |
DE2551614C2 (en) | Axial short axial fan | |
DE2940773C2 (en) | High-performance centrifugal fan | |
DE3332132T1 (en) | Centrifugal pump for liquids containing solids | |
DE102009031552A1 (en) | Blower of centrifugal type | |
DE1628335A1 (en) | Centrifugal fan with axial outflow | |
EP3317544B1 (en) | Vortex pump | |
DE2807273A1 (en) | RADIAL FANS, IN PARTICULAR FOR HEATING AND AIR CONDITIONING SYSTEMS IN MOTOR VEHICLES | |
DE1428273C3 (en) | Impeller for a low-noise axial fan | |
DE3924281A1 (en) | DEVICE FOR CONVEYING A GASEOUS MEDIUM | |
DE10017808B4 (en) | Housing for a blower, especially a radial blower | |
WO2019048241A1 (en) | Covered radial fan wheel with a periodically and asymmetrically shaped plate | |
DD288649A5 (en) | RADIAL FAN | |
DE1628428B2 (en) | HOUSING FOR A VACUUM CLEANER | |
EP1046822B1 (en) | Blower and scroll casing | |
DE1071888B (en) | ||
DE3811602C2 (en) | Centrifugal fan | |
EP3608544B1 (en) | Centrifugal pump | |
DE4328396A1 (en) | Bucket wheel for centrifugal pumps | |
DE9305528U1 (en) | Spiral blower | |
DE4335165B4 (en) | radial fans | |
DE10249244B4 (en) | Impeller for a side channel machine | |
DE8808417U1 (en) | Spiral blower | |
DE2352884C2 (en) | Crushing and / or conveying device |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
PUAI | Public reference made under article 153(3) epc to a published international application that has entered the european phase |
Free format text: ORIGINAL CODE: 0009012 |
|
AK | Designated contracting states |
Kind code of ref document: A1 Designated state(s): BE FR GB IT NL SE |
|
RIN1 | Information on inventor provided before grant (corrected) |
Inventor name: LINSE, STEFAN Inventor name: BRANDTNER, JOSEPH |
|
RIN1 | Information on inventor provided before grant (corrected) |
Inventor name: BRANDTNER, JOSEPH |
|
17P | Request for examination filed |
Effective date: 19950607 |
|
17Q | First examination report despatched |
Effective date: 19960903 |
|
GRAG | Despatch of communication of intention to grant |
Free format text: ORIGINAL CODE: EPIDOS AGRA |
|
GRAG | Despatch of communication of intention to grant |
Free format text: ORIGINAL CODE: EPIDOS AGRA |
|
GRAH | Despatch of communication of intention to grant a patent |
Free format text: ORIGINAL CODE: EPIDOS IGRA |
|
GRAH | Despatch of communication of intention to grant a patent |
Free format text: ORIGINAL CODE: EPIDOS IGRA |
|
GRAA | (expected) grant |
Free format text: ORIGINAL CODE: 0009210 |
|
RAP1 | Party data changed (applicant data changed or rights of an application transferred) |
Owner name: TRUMA GERAETETECHNIK GMBH & CO. |
|
ITF | It: translation for a ep patent filed |
Owner name: BARZANO' E ZANARDO MILANO S.P.A. |
|
AK | Designated contracting states |
Kind code of ref document: B1 Designated state(s): BE FR GB IT NL SE |
|
ET | Fr: translation filed | ||
GBT | Gb: translation of ep patent filed (gb section 77(6)(a)/1977) |
Effective date: 19981022 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: BE Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 19990331 |
|
PLBE | No opposition filed within time limit |
Free format text: ORIGINAL CODE: 0009261 |
|
STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT |
|
26N | No opposition filed | ||
BERE | Be: lapsed |
Owner name: TRUMA GERATETECHNIK G.M.B.H. & CO. Effective date: 19990331 |
|
PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: GB Payment date: 20000222 Year of fee payment: 7 |
|
PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: FR Payment date: 20000316 Year of fee payment: 7 |
|
PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: NL Payment date: 20000322 Year of fee payment: 7 |
|
PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: SE Payment date: 20000323 Year of fee payment: 7 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: GB Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20010323 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: SE Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20010324 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: NL Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20011001 |
|
EUG | Se: european patent has lapsed |
Ref document number: 94104635.1 |
|
GBPC | Gb: european patent ceased through non-payment of renewal fee |
Effective date: 20010323 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: FR Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20011130 |
|
NLV4 | Nl: lapsed or anulled due to non-payment of the annual fee |
Effective date: 20011001 |
|
REG | Reference to a national code |
Ref country code: FR Ref legal event code: ST |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: IT Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES;WARNING: LAPSES OF ITALIAN PATENTS WITH EFFECTIVE DATE BEFORE 2007 MAY HAVE OCCURRED AT ANY TIME BEFORE 2007. THE CORRECT EFFECTIVE DATE MAY BE DIFFERENT FROM THE ONE RECORDED. Effective date: 20050323 |