EP1923573A2 - Spiralförmiges Gehäuse, insbesondere für Gebläse zur Verwendung bei Abzugshauben - Google Patents

Spiralförmiges Gehäuse, insbesondere für Gebläse zur Verwendung bei Abzugshauben Download PDF

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Publication number
EP1923573A2
EP1923573A2 EP07120330A EP07120330A EP1923573A2 EP 1923573 A2 EP1923573 A2 EP 1923573A2 EP 07120330 A EP07120330 A EP 07120330A EP 07120330 A EP07120330 A EP 07120330A EP 1923573 A2 EP1923573 A2 EP 1923573A2
Authority
EP
European Patent Office
Prior art keywords
manifold
impeller
axis
section
delivery
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Withdrawn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
EP07120330A
Other languages
English (en)
French (fr)
Other versions
EP1923573A3 (de
Inventor
Antonio Ranalli
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.)
LN 2 Srl a socio unico
Original Assignee
LN 2 Srl a socio unico
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 LN 2 Srl a socio unico filed Critical LN 2 Srl a socio unico
Publication of EP1923573A2 publication Critical patent/EP1923573A2/de
Publication of EP1923573A3 publication Critical patent/EP1923573A3/de
Withdrawn legal-status Critical Current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
    • F04D29/40—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
    • 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

Definitions

  • the present invention relates to a manifold, in particular a scroll type manifold, which is intended to constitute the housing of the impeller of a fan, particularly for fans of extractor hoods, having the features set out in the preamble of the main claim.
  • the invention is used particularly, though not exclusively, in the construction of ventilation units for hoods for extracting air-like gases from domestic environments.
  • scroll type manifolds in two separate portions is commonly used in the specific sector for constructing ventilation units for extractor hoods or similar extraction devices for fumes or other gases.
  • a first portion of the manifold also referred to using the term "cochlea”
  • the impeller is positioned therein with the shaft being rotatably supported on one or more supports and
  • the scroll type manifold is closed by positioning the second portion on the first, to which it is fixed by connection means of the removable type in order to allow any subsequent disassembly.
  • the volute of the manifold by its very nature, is provided with a delivery cross-section which is directed tangentially with a delivery flow direction which is substantially perpendicular relative to the direction of the axis of rotation of the radial impeller, and one or more open intake cross-sections in the manifold coaxially relative to the axis of rotation of the impeller.
  • the arrangement of the ventilator unit in extractor hoods makes it necessary for the manifold to be arranged with the delivery flow axis having a substantially vertical direction so as to promote the discharge of the gases drawn in.
  • Such a structural approach can in some cases limit, in phases for installing or maintaining the fan, the ease of access and handling required by the operator, making that type of intervention extremely laborious and complex.
  • a main object of the invention is to overcome those limits by means of a manifold which is configured in such a manner as to allow an operator to be readily and quickly able to couple and uncouple the manifold portions so as to be afforded access to the motor/impeller unit, with greater overall simplification of the assembly/disassembly operations.
  • a scroll type manifold is generally designated 1 and is provided in order to constitute a housing for a radial impeller 2 of a fan which is rotated by a motor 3 about an axis of rotation which is indicated with an X.
  • a delivery cross-section 4 in which the delivery flow direction indicated by the axis Y in the Figures is perpendicular relative to the axis of rotation X, and a main intake cross-section 5 comprising a lateral opening 6 which is formed in the manifold and which is coaxial with the axis of the impeller.
  • the delivery cross-section 4 and intake cross-section 5 are preferably circular in shape, as clearly illustrated in the Figures.
  • the manifold 1 further comprises a first and a second manifold portion which are designated 7 and 8, respectively, and which can be connected to each other at a coupling profile P by removable connection means, for example, screw type means.
  • the opening 6 of the main intake cross-section which is coaxial with the axis X of the impeller.
  • a mouth 9 which has a closed circular contour and which defines the discharge cross-section of the delivery flow 4 generated by the fan, is further formed in an integral manner in that portion.
  • That delivery mouth 9 is developed, over at least a portion, in the axial direction Y of the delivery flow and is provided in order to be coupled to a corresponding tubular pipe (which is not illustrated) in order to convey the flow which is drawn in and directed to the exhaust.
  • the portion 7 of the manifold is further provided in order to be fixed, in a removable manner, to a portion 10 of the support frame of an extractor hood, which is only partially illustrated in the Figures.
  • the second portion 8 of the manifold is provided in order to support, in a rotatable manner thereon, both the impeller 2 and the motor unit 3 for actuating the impeller 2.
  • the motor 3 is supported in a projecting manner on the portion 8 by means of a support element 12 which is of nozzle-like form and which is provided in the manifold 1 at the side laterally opposite the intake opening 6.
  • the support 12 is fixed to the manifold by means of a plurality of struts 13, which define another auxiliary lateral opening 14 for drawing in the gases, in the portion 8 of the manifold, at the side axially opposite the opening 6.
  • the impeller 2 is mounted coaxially relative to the motor 3 and is also supported in a projecting manner on the portion 8 of the manifold.
  • a plane which is parallel with the direction Y of flow and which extends through the axis X (therefore parallel with the plane of the page showing Figure 3) is designated Q
  • the projection of the profile P for connecting the portions 7 and 8 of the manifold in the plane Q defines a discontinuous line L, including a plurality of segments with a rectilinear portion, as will be clearly appreciated below.
  • the line L comprises, in a continuation of each other, a portion 15 which is parallel with the axis X and which continues as far as a portion 16 which is perpendicular relative to the axis X and which in turn continues as far as a portion 17 which is angled with respect to the axis X.
  • the portion 17 further extends as far as a portion 18 which is also directed perpendicularly relative to the axis X, but spaced-apart in relation to the portion 16, in the direction towards the intake cross-section 5.
  • the portion 17 (for connecting the portions 16 and 18) extends near the axis X so that the portions 16 and 18 are developed at opposite sides with respect to a diametral plane which extends through the axis X and which is perpendicular to the plane Q.
  • connection profile P in plane Q it is possible for the first and second manifold portions 7, 8 to be connected/disconnected to/from each other along the profile P, by means of a main relative movement brought about substantially in the axial direction of flow (in a manner parallel with axis Y) even if the impeller (and the motor 3 therewith) is held so as to be supported on the second manifold portion.
  • the assembly comprising the impeller 2/portion 8 can be coupled to the portion 7 of the manifold with a main movement which is substantially axial which, at most, can provide for a modest movement transversely relative to the axis Y, thereby promoting the assembly/disassembly of the fan unit, which in typical applications in extractor hoods preferably involves that axial direction, along the axis Y, whereas, in contrast, it involves limited access for the operator in a transverse direction relative to the delivery flow (parallel with the axis X).
  • the delivery flow axis coincides with the vertical direction and the space available to the operator for assembling/disassembling the fan is nearly accessible, from below, exclusively in the vertical direction, the dimensions of the extractor hood limiting the possibilities for access in the transverse direction relative to the vertical axis of flow.
  • the portion 7 of the manifold which carries the delivery mouth can be held so as to be fixed to the frame of the extractor hood, even during phases for disassembling the fan/motor unit, assisting the operator who does not have to remove the portion for connecting the manifold to the fume extraction pipe;
  • the second portion 8 of the manifold, which is fixedly joined to the impeller and to the motor can be assembled/disassembled in a quasi-parallel direction relative to the delivery flow axis, with the advantages set out above owing to that configuration.
  • the portion 16 of the profile line L can belong to a central plane of symmetry (perpendicular to the axis X) of the manifold, or it can be formed at the side opposite the portion 18 with respect to that central plane of symmetry.
  • the portion 16 can itself be angled with respect to the axis Y ( Figure 5); in that case, the portion 17 is developed in a manner parallel with the axis Y.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)
EP07120330A 2006-11-20 2007-11-09 Spiralförmiges Gehäuse, insbesondere für Gebläse zur Verwendung bei Abzugshauben Withdrawn EP1923573A3 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
ITPD20060431 ITPD20060431A1 (it) 2006-11-20 2006-11-20 Collettore a chiocciola, particolarmente per ventilatori da impiegarsi in cappe aspiranti

Publications (2)

Publication Number Publication Date
EP1923573A2 true EP1923573A2 (de) 2008-05-21
EP1923573A3 EP1923573A3 (de) 2012-05-02

Family

ID=38834506

Family Applications (1)

Application Number Title Priority Date Filing Date
EP07120330A Withdrawn EP1923573A3 (de) 2006-11-20 2007-11-09 Spiralförmiges Gehäuse, insbesondere für Gebläse zur Verwendung bei Abzugshauben

Country Status (3)

Country Link
EP (1) EP1923573A3 (de)
IT (1) ITPD20060431A1 (de)
RU (1) RU2450169C2 (de)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2397699A1 (de) * 2010-06-16 2011-12-21 Behr France Rouffach SAS Gebläse für eine Klimaanlage eines Kraftfahrzeuges
EP2400162A3 (de) * 2010-06-24 2017-06-07 Sit S.P.A. Verbesserter Zentrifugallüfter, insbesondere für Abzugshauben

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3182899A (en) * 1960-06-01 1965-05-11 Whirlpool Co Wall mounted dual fan structure
EP1106834A1 (de) * 1999-12-06 2001-06-13 Valeo Climatisation Befestigung eines Motors an einem Lüftergehäuse
US6881035B1 (en) * 2003-01-02 2005-04-19 Fasco Industries, Inc. Draft inducer having single piece metal impeller and improved housing

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SU66619A1 (ru) * 1945-07-17 1945-11-30 С.А. Рысин Кожух центробежного вентил тора
US4174020A (en) * 1975-07-01 1979-11-13 Challis Louis A Acoustic treatment for fans
SU926369A1 (ru) * 1978-10-19 1982-05-07 Предприятие П/Я Р-6131 Кожух вентил тора
SU1590683A1 (ru) * 1988-12-07 1990-09-07 Ярославский моторный завод Кожух вентил тора
GB2254892A (en) * 1991-04-16 1992-10-21 Gen Electric Hollow airfoil.
RU2133382C1 (ru) * 1995-12-19 1999-07-20 Акционерное общество открытого типа Самарский научно-технический комплекс "Двигатели НК" Вентилятор

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3182899A (en) * 1960-06-01 1965-05-11 Whirlpool Co Wall mounted dual fan structure
EP1106834A1 (de) * 1999-12-06 2001-06-13 Valeo Climatisation Befestigung eines Motors an einem Lüftergehäuse
US6881035B1 (en) * 2003-01-02 2005-04-19 Fasco Industries, Inc. Draft inducer having single piece metal impeller and improved housing

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2397699A1 (de) * 2010-06-16 2011-12-21 Behr France Rouffach SAS Gebläse für eine Klimaanlage eines Kraftfahrzeuges
EP2400162A3 (de) * 2010-06-24 2017-06-07 Sit S.P.A. Verbesserter Zentrifugallüfter, insbesondere für Abzugshauben

Also Published As

Publication number Publication date
RU2007142650A (ru) 2009-05-27
RU2450169C2 (ru) 2012-05-10
ITPD20060431A1 (it) 2008-05-21
EP1923573A3 (de) 2012-05-02

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