EP2698542A3 - Radial fan with spiral housing - Google Patents

Radial fan with spiral housing Download PDF

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Publication number
EP2698542A3
EP2698542A3 EP13180009.6A EP13180009A EP2698542A3 EP 2698542 A3 EP2698542 A3 EP 2698542A3 EP 13180009 A EP13180009 A EP 13180009A EP 2698542 A3 EP2698542 A3 EP 2698542A3
Authority
EP
European Patent Office
Prior art keywords
spiral
outer diameter
fan
fan wheel
facing
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.)
Withdrawn
Application number
EP13180009.6A
Other languages
German (de)
French (fr)
Other versions
EP2698542A2 (en
Inventor
Michael Hornig
Dr. Michael Schmitz
Arnold Schulde
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 St Georgen GmbH and Co KG
Original Assignee
Ebm Papst St Georgen GmbH and Co KG
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 Ebm Papst St Georgen GmbH and Co KG filed Critical Ebm Papst St Georgen GmbH and Co KG
Publication of EP2698542A2 publication Critical patent/EP2698542A2/en
Publication of EP2698542A3 publication Critical patent/EP2698542A3/en
Withdrawn legal-status Critical Current

Links

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
    • F04D29/26—Rotors specially for elastic fluids
    • F04D29/28—Rotors specially for elastic fluids for centrifugal or helico-centrifugal pumps for radial-flow or helico-centrifugal pumps
    • F04D29/281—Rotors specially for elastic fluids for centrifugal or helico-centrifugal pumps for radial-flow or helico-centrifugal pumps for fans or blowers
    • F04D29/282—Rotors specially for elastic fluids for centrifugal or helico-centrifugal pumps for radial-flow or helico-centrifugal pumps for fans or blowers the leading edge of each vane being substantially parallel to the rotation axis
    • 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
    • F04D29/26—Rotors specially for elastic fluids
    • F04D29/28—Rotors specially for elastic fluids for centrifugal or helico-centrifugal pumps for radial-flow or helico-centrifugal pumps
    • F04D29/30—Vanes
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D29/00—Details, component parts, or accessories
    • F04D29/40—Casings; Connections of working fluid
    • F04D29/42—Casings; Connections of working fluid for radial or helico-centrifugal pumps
    • F04D29/4206—Casings; Connections of working fluid for radial or helico-centrifugal pumps especially adapted for elastic fluid pumps
    • F04D29/4226—Fan casings

Abstract

Ein Radiallüfter (100) hat: Ein Lüfterrad (142), welches um eine zugeordnete Drehachse (149) drehbar ist und einen vorgegebenen Außendurchmesser aufweist; einen Motor (120) zum Antrieb des Lüfterrads, welcher mit einer Motorwicklung (132) versehen ist; ein Lüftergehäuse (110), welches einen mit einer Lufteintrittsöffnung (115) und einer Luftaustrittsöffnung (117) versehenen Druckraum (113) ausbildet, in welchem zumindest das Lüfterrad (142) angeordnet ist; wobei der Druckraum (113) mit einer das Lüfterrad umschließenden, zumindest bereichsweise spiralförmigen Außenwand (119) versehen ist, welche bevorzugt mindestens drei ineinander übergehende Spiralabschnitte (411, 412, 413) aufweist, wobei einem ersten Spiralabschnitt (411) ein erster Spiralradius (401) zugeordnet ist, welcher aus einem Bereich vom etwa 0,65-fachen bis zum etwa 0,6825-fachen des Außendurchmessers (D) vorgegeben ist, einem zweiten Spiralabschnitt (412) ein zweiter Spiralradius (402) zugeordnet ist, welcher aus einem Bereich vom etwa 0,725-fachen bis zum etwa 0,7825-fachen des Außendurchmessers (D) vorgegeben ist, und einem dritten Spiralabschnitt (413) ein dritter Spiralradius (403) zugeordnet ist, welcher aus einem Bereich vom etwa 0,8375-fachen bis zum etwa 0,895-fachen des Außendurchmessers (D) vorgegeben ist. Das Lüfterrad (142) ist mit gekrümmten Schaufeln (181, 182, 183, 184, 185) versehen, welche jeweils eine der Drehachse (149) zugewandte Kante (582) und eine der spiralförmigen Außenwand (119) zugewandte Kante (584) aufweisen, wobei eine gerade Verbindungslinie (585) zwischen diesen Kanten (582, 584) eine Länge (L3) aufweist, die aus einem Bereich vom 0,16-fachen bis zum 0,195-fachen des Außendurchmessers (D) vorgegeben ist. Eine Verlängerung (586) der Verbindungslinie (585) schließt mit einer an der der spiralförmigen Außenwand (119) zugewandten Kante (584) angelegten Tangente (587) des Lüfterrads (142) einen ersten Winkel (α) aus einem Bereich von 48° bis 58° ein.

Figure imgaf001
A radial fan (100) includes: a fan (142) rotatable about an associated pivot (149) and having a predetermined outer diameter; a motor (120) for driving the fan wheel, which is provided with a motor winding (132); a fan housing (110) which forms a pressure chamber (113) provided with an air inlet opening (115) and an air outlet opening (117) in which at least the fan wheel (142) is arranged; wherein the pressure space (113) is provided with an outer wall (119) enclosing the fan wheel, at least partially, which preferably has at least three spiral sections (411, 412, 413), wherein a first spiral section (411) has a first spiral radius (401 ), which is assigned from a range from about 0.65 times to about 0.6825 times the outer diameter (D), a second spiral portion (412) is associated with a second spiral radius (402), which from a range from about 0.725 times to about 0.7825 times the outer diameter (D), and a third spiral portion (413) having a third spiral radius (403) associated therewith, which ranges from about 0.8375 times to about 0.895 times the outer diameter (D) is given. The fan wheel (142) is provided with curved blades (181, 182, 183, 184, 185) each having an edge (582) facing the rotation axis (149) and an edge (584) facing the spiral outer wall (119), wherein a straight connecting line (585) between said edges (582, 584) has a length (L3) defined from a range of 0.16 times to 0.195 times the outer diameter (D). An extension (586) of the connecting line (585) includes a tangent (587) of the fan wheel (142) attached to the edge (584) facing the spiral outer wall (119) at a first angle (α) from 48 ° to 58 ° °.
Figure imgaf001
EP13180009.6A 2012-08-14 2013-08-10 Radial fan with spiral housing Withdrawn EP2698542A3 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102012107441.0A DE102012107441B4 (en) 2012-08-14 2012-08-14 Centrifugal fan with spiral housing

Publications (2)

Publication Number Publication Date
EP2698542A2 EP2698542A2 (en) 2014-02-19
EP2698542A3 true EP2698542A3 (en) 2017-07-12

Family

ID=48979595

Family Applications (1)

Application Number Title Priority Date Filing Date
EP13180009.6A Withdrawn EP2698542A3 (en) 2012-08-14 2013-08-10 Radial fan with spiral housing

Country Status (2)

Country Link
EP (1) EP2698542A3 (en)
DE (1) DE102012107441B4 (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP6138343B2 (en) * 2014-03-19 2017-05-31 三菱電機株式会社 Centrifugal blower
CN107477678B (en) * 2017-08-25 2023-07-04 郑州凌达压缩机有限公司 Air duct structure and air conditioner

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4264273A (en) * 1975-06-13 1981-04-28 Warman International Limited Casing and casing liners for centrifugal pumps of the volute type
US4526506A (en) * 1982-12-29 1985-07-02 Wilhelm Gebhardt Gmbh Radial fan with backwardly curving blades
US20080267774A1 (en) * 2007-04-27 2008-10-30 Shih-Ci Lian Curvature of inner wall for blowing machine
CN102536896A (en) * 2012-03-22 2012-07-04 安徽安风风机有限公司 Blade of centrifugal fan

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4310467A1 (en) * 1993-03-31 1994-10-06 Klein Schanzlin & Becker Ag Pot housing pump
DE10314425B4 (en) * 2002-06-22 2005-06-16 Tuchenhagen Gmbh Guide device for a designed in sheet metal housing of a centrifugal pump
DE212009000007U1 (en) * 2008-05-27 2010-08-19 Ebm-Papst St. Georgen Gmbh & Co. Kg radial fans

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4264273A (en) * 1975-06-13 1981-04-28 Warman International Limited Casing and casing liners for centrifugal pumps of the volute type
US4526506A (en) * 1982-12-29 1985-07-02 Wilhelm Gebhardt Gmbh Radial fan with backwardly curving blades
US20080267774A1 (en) * 2007-04-27 2008-10-30 Shih-Ci Lian Curvature of inner wall for blowing machine
CN102536896A (en) * 2012-03-22 2012-07-04 安徽安风风机有限公司 Blade of centrifugal fan

Also Published As

Publication number Publication date
DE102012107441A1 (en) 2014-02-20
DE102012107441B4 (en) 2016-05-25
EP2698542A2 (en) 2014-02-19

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