EP0403007A1 - Volute pour ventilateur entraîné par un moteur - Google Patents

Volute pour ventilateur entraîné par un moteur Download PDF

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Publication number
EP0403007A1
EP0403007A1 EP90201492A EP90201492A EP0403007A1 EP 0403007 A1 EP0403007 A1 EP 0403007A1 EP 90201492 A EP90201492 A EP 90201492A EP 90201492 A EP90201492 A EP 90201492A EP 0403007 A1 EP0403007 A1 EP 0403007A1
Authority
EP
European Patent Office
Prior art keywords
volute
side panel
peripheral groove
impeller
interior
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Withdrawn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
EP90201492A
Other languages
German (de)
English (en)
Inventor
Eugenio Banfi
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.)
MARZORATI TECNICA INDUSTRIALE SpA
Original Assignee
MARZORATI TECNICA INDUSTRIALE SpA
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 MARZORATI TECNICA INDUSTRIALE SpA filed Critical MARZORATI TECNICA INDUSTRIALE SpA
Publication of EP0403007A1 publication Critical patent/EP0403007A1/fr
Withdrawn legal-status Critical Current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
    • F04D29/60—Mounting; Assembling; Disassembling
    • F04D29/62—Mounting; Assembling; Disassembling of radial or helico-centrifugal pumps
    • F04D29/624—Mounting; Assembling; Disassembling of radial or helico-centrifugal pumps especially adapted for elastic fluid pumps
    • F04D29/626—Mounting or removal of fans
    • 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
    • F04D29/424—Double entry casings

Definitions

  • the present invention relates to a volute for motor-­driven fans.
  • the volutes for motor-driven fans known from the prior art, and in particular the industrial type of such volutes, comprise a first side panel and a second side panel and a curved band interposed between said side panels, and an impeller.
  • the first side panel and the second side panel are respectively provided with a first opening and with a second opening acting as the inlet ways for the air which is laterally intaken and is subsequently frontally expelled from the volute.
  • the first side panel and the second side panel are respctively provided with a first perimetrical step and with a second perimetrical step, and the curved band is provided with a first side edge and a second side edge, respectively provided with a first peripheral groove and with a second peripheral groove.
  • the first step and the second step are coupled by means of a respective forced fit inside the interior of said first peripheral groove and said second peripheral groove in order to generate the volute.
  • the first opening and the second opening have various shapes and sizes.
  • the second opening has a larger diameter, so as to make it possible the impeller to be mounted inside the volute.
  • the second opening is then partially closed by means of a mouth piece, so that when said mouth piece is mounted the first opening and the second opening have eventually a same diameter.
  • the mouth piece is fastened onto the second side panel by means of some screws arranged alongside the larger-size circumferential edge of said mouth piece.
  • Such a traditional structure although is at all satisfactory from a functional view point, is however constituted by a plurality of pieces which increase the end cost thereof.
  • volute for motor-­driven fans which volute comprises a first side panel and a second side panel, a curved band interposed between said side panels and an impeller, with said first side panel and said second side panel being respectively provided with a first opening and a second opening acting as the intake ways for air sucked by the volute, and with a first peripheral edge and a second peripheral edge respectively provided with a first step and a second step, with said curved band having a first side edge and a second side edge respectively provided with a first peripheral groove and a second peripheral groove, with said first step and said second step being respectively connected by means of a forced fit inside the interior of said first peripheral groove and of said second peripheral groove in order to generate the volute, which volute is characterized in that said first side panel and said second side panel are specularly identical to each other and that the respective openings acting as the inlet ways for the intaken air have a diameter smaller than the outer diameter of the impeller, with said impeller being assembled inside the interior of the volute before said
  • first side panel and the second side panel specularly identical to each other to each other, a drastic decrease in production costs is attained, in that: - one single die can be easily adapted so as to be able to produce both of said side panels; - neither the mouth piece, nor the threaded bores for fastening it have to be produced any longer; - when the volute is assembled, the step of fastening of the mouth piece by means of screws is no longer necessary.
  • the manufacturer has to remember that the impeller has to be introduced into the interior of the volute before the forced joints which constrain the edges of the side panels inside the grooves of the curved band are produced.
  • the volute according to the present invention comprises a first side panel 2 and a second side panel 3, a curved band 4 interposed between said side panels and an impeller 5.
  • Said first side panel 2 and said second side panel 3 are respectively provided with a first opening 6 and a second opening 7 acting as the intake ways for air sucked by the volute 1, and with a first peripheral edge 8 and a second peripheral edge 9 respectively provided with a first step and a second step 11.
  • the curved band has a first side edge 12 and a second side edge 13 respectively provided with a first peripheral groove 14 and a second peripheral groove 15.
  • Said first side panel 2 and said second side panel 3 are specularly identical to each other and the respective openings 6 and 7 acting as the inlet ways for the intaken air have a diameter smaller than the outer diameter of the impeller 5; they are furthermore provided with a first annular invitation 16 and a second annular invitation 17, suitable for improving the characteristics of respect of the laws which govern air motion of the same openings 6 and 7.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)
EP90201492A 1989-06-13 1990-06-09 Volute pour ventilateur entraîné par un moteur Withdrawn EP0403007A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
IT2122989U IT216657Z2 (it) 1989-06-13 1989-06-13 Coclea per motoventilatori.
IT2122989U 1989-06-13

Publications (1)

Publication Number Publication Date
EP0403007A1 true EP0403007A1 (fr) 1990-12-19

Family

ID=11178726

Family Applications (1)

Application Number Title Priority Date Filing Date
EP90201492A Withdrawn EP0403007A1 (fr) 1989-06-13 1990-06-09 Volute pour ventilateur entraîné par un moteur

Country Status (2)

Country Link
EP (1) EP0403007A1 (fr)
IT (1) IT216657Z2 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5221183A (en) * 1992-03-13 1993-06-22 Alco Industries, Inc. Blower housing seam and method of making same
EP1388669A1 (fr) * 2002-08-01 2004-02-11 GEBHARDT VENTILATOREN GMBH & CO. Boítier d'un ventilateur et son procédé de fabrication

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1609545A (en) * 1926-12-07 Blower housing or pan casing
US3653116A (en) * 1970-09-25 1972-04-04 Ilg Ind Inc Method and apparatus for forming centrifugal fan housings
FR2105109A7 (fr) * 1970-09-28 1972-04-28 Torin Corp
US3743439A (en) * 1971-04-30 1973-07-03 Carrier Corp Centrifugal fan assembly
EP0289735A2 (fr) * 1987-03-12 1988-11-09 Fischbach GmbH & Co.KG Verwaltungsgesellschaft Boîtier pour un ventilateur radial

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1609545A (en) * 1926-12-07 Blower housing or pan casing
US3653116A (en) * 1970-09-25 1972-04-04 Ilg Ind Inc Method and apparatus for forming centrifugal fan housings
FR2105109A7 (fr) * 1970-09-28 1972-04-28 Torin Corp
US3743439A (en) * 1971-04-30 1973-07-03 Carrier Corp Centrifugal fan assembly
EP0289735A2 (fr) * 1987-03-12 1988-11-09 Fischbach GmbH & Co.KG Verwaltungsgesellschaft Boîtier pour un ventilateur radial

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5221183A (en) * 1992-03-13 1993-06-22 Alco Industries, Inc. Blower housing seam and method of making same
EP1388669A1 (fr) * 2002-08-01 2004-02-11 GEBHARDT VENTILATOREN GMBH & CO. Boítier d'un ventilateur et son procédé de fabrication

Also Published As

Publication number Publication date
IT216657Z2 (it) 1991-09-17
IT8921229V0 (it) 1989-06-13

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