EP1930601A2 - Lüftergehäuse für eine Absaughaube - Google Patents

Lüftergehäuse für eine Absaughaube Download PDF

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Publication number
EP1930601A2
EP1930601A2 EP07121376A EP07121376A EP1930601A2 EP 1930601 A2 EP1930601 A2 EP 1930601A2 EP 07121376 A EP07121376 A EP 07121376A EP 07121376 A EP07121376 A EP 07121376A EP 1930601 A2 EP1930601 A2 EP 1930601A2
Authority
EP
European Patent Office
Prior art keywords
manifold
shells
nozzle
operating position
formations
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Withdrawn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
EP07121376A
Other languages
English (en)
French (fr)
Other versions
EP1930601A3 (de
Inventor
Antonio LN 2 S.r.l. a socio unico 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 EP1930601A2 publication Critical patent/EP1930601A2/de
Publication of EP1930601A3 publication Critical patent/EP1930601A3/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Withdrawn legal-status Critical Current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 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 half-shells which can be connected to each other is commonly used in the specific sector for construction of ventilation units for extractor hoods or similar devices for extracting fumes, vapours or other air-like gases.
  • the manifold also referred to using the term "cochlea”
  • the manifold is typically constructed in two half-shells which can be connected to each other in a connection plane so as to construct the volute of the manifold, inside which the impeller is rotatingly supported and actuated by the relevant motor unit.
  • the manifold is further generally fixed to the frame of the extractor hood so that the discharge pipe from the hood is connected to the delivery cross-section of the manifold.
  • that delivery cross-section is constructed in the form of a substantially cylindrical nozzle which can be fitted, preferably in a fluid-tight manner, in the discharge pipe from the extractor hood.
  • the manifold is normally rigidly fixed to the frame of the extractor hood with screw type means or other similar fixing means of the removable type, in order to facilitate the assembly/disassembly phases of the ventilation unit in installation locations and the subsequent maintenance operations.
  • such applications normally involve limited accessibility to the ventilation unit, owing mainly to the small spaces provided internally with respect to the extractor hoods in the region for assembling the ventilation unit, which circumstance makes the operations for assembling/disassembling the ventilation unit complex and quite difficult, and in particular those necessary for assembling/disassembling the manifold on/from the frame of the extractor hood.
  • a main object of the invention is to overcome those limitations by means of a manifold which is configured in such a manner as to allow an operator readily and quickly to be able to connect or disconnect the manifold to/from the extractor hood structure to which it is fixed, and to gain access to the motor/impeller unit more readily and more quickly, with overall greater simplification of the assembly/disassembly operations.
  • a scroll type manifold generally designated 1 is constructed in accordance with the invention and provided so as to constitute the housing of a radial fan impeller 2, which is only schematically illustrated and which can be driven in rotation by a motor unit (not illustrated) about an axis of rotation designated X.
  • a delivery cross-section 3 in which the delivery flow direction which is indicated by the direction of the axis Y of the Figures, is directed substantially perpendicularly relative to the axis of rotation.
  • the manifold 1 comprises a first and a second manifold half-shell, which are designated 4 and 5, respectively, and which can be connected to each other in a connection plane P.
  • the half-shells are preferably substantially configured in a specularly symmetrical manner with respect to the connection plane, the plane therefore defining a substantially symmetrical centre plane.
  • Each half-shell 4, 5 comprises a respective portion 4a, 5a of a delivery nozzle 6, the portions 4a, 5a together defining the delivery cross-section 3.
  • the nozzle portions are advantageously configured so as to have a semi-cylindrical profile so as to define a delivery nozzle which has a circular cross-section and which is able to be connected, preferably in a fluid-tight manner, to a tubular discharge pipe, which is designated 7 and which is only schematically illustrated in the Figures, of an extractor hood structure 8 which is also only partially illustrated in the appended Figures.
  • the pipe 7 is provided in order to convey the flow which is drawn in by the ventilation unit in the direction of the exhaust of the hood.
  • a main intake cross-section 9 of the fan comprising a lateral opening 9a which is advantageously of circular shape and which is coaxial with the axis of the impeller.
  • a flange 10 for supporting the impeller/motor unit which flange 10 is connected to the half-shell by means of a plurality of strut-like elements 11.
  • the through-holes which are defined between the struts 11 and the central flange 10 are such that together they constitute another auxiliary intake cross-section with respect to the main cross-section 9.
  • the motor/impeller unit can further be rotatingly supported on the flange 10 in a manner projecting into the manifold.
  • the half-shells 4, 5 of the manifold are connected to each other in an articulated manner about an articulation axis which is designated Z in the Figures.
  • the half-shells 4, 5 can be mutually pivoted between a first position ( Figure 1 ), in which they are connected along the connection plane P and the nozzle portions 4a, 5a delimit the entire delivery cross-section 3, and a second operating position ( Figure 2 ), in which the nozzle portions are moved towards each other with a consequent reduction in the extent of the delivery cross-section, whose function will be clearly appreciated in the remainder of the description.
  • the articulation region preferably extends near the nozzle portions and the articulation axis Z of the half-shells is defined in the centre plane of symmetry of the manifold (perpendicular to the axis X of the impeller and substantially coincident with the connection plane P).
  • That articulation axis is further located in the region between the free end of the nozzle 6 and the axis X of the impeller.
  • articulation means which comprise a pair of pin-like formations 12 which are provided on the half-shell 5, at diametrically opposed sides in the corresponding nozzle portion 5a, and a pair of respective eyelet-like formations 13 which are formed in the corresponding position on the other half-shell 4.
  • Each eyelet-like formation 13 can be engaged in an articulated manner with a hinge-like connection by the corresponding pin-like formation 12, as clearly illustrated in Figures 3 and 4 .
  • the hinge-like connection is brought about along the axis of articulation Z.
  • Each half-shell 4, 5 further comprises retention means, which are generally designated 14 and which can cooperate with respective counter-retention means which are provided on a frame structure 15 of the hood 8, with which the manifold 1 is intended to be connected in a removable manner.
  • the retention means are provided on each nozzle portion 4a, 5a and comprise a respective groove 16 which can be engaged with a profile 17 of a projection of the frame 15, that projection constituting the corresponding counter-retention means.
  • Each projection being engaged in the respective groove of the corresponding half-shell brings about, in the direction of the axis Y, axial retention of the manifold with respect to the stationary structure of the frame of the hood 8, with the manifold in the first operating position.
  • each groove 16 extends in the external semi-cylindrical surface of the corresponding nozzle portion and is developed by a main portion of the semi-circumferential arc of that portion. Furthermore, each groove 16 is preferably delimited by a respective pair of projections 18a, 18b, which are mutually spaced apart and which project radially from the external semi-cylindrical surface of the corresponding nozzle portion. The distance between the projections 18a, 18b is selected in such a manner that the profile 17 of the frame of the hood remains retained in a stable manner therebetween, in the mutual engagement condition, in order to ensure the axial retention action, without play, of the manifold with respect to the hood structure.
  • pairs of projections 18a, 18b can be provided, for example, two, four or six in number, and being discontinuous between each other in the circumferential extent of the nozzle.
  • projections there can be provided fins or similar extension pieces having a similar function.
  • Respective surface indentations which are formed at the opposing diametral ends of the nozzle portion 5a are designated 19. Those surface indentations have such an extent as to allow the nozzle portions to pivot, in a movement away from and towards the second operating position, without bringing about any interference between the ends thereof in the region in which they are positioned one above the other, as illustrated in Figure 2 .
  • Catch type connection means for securing the half-shells 4, 5 when they are pivoted into the first operating position are further generally designated 20.
  • Those means comprise two respective pairs of tooth-like formations 21 on the half-shell 5, which are able to engage with respective catch type connection seats 22 which are formed, in a corresponding position, in the other half-shell 4.
  • the catch type connection is ensured by the resilient return of the teeth in the state of engagement with the corresponding seats and is configured to be of the removable type so as to allow the operations for both connecting and disconnecting the half-shells to be rapid and simple.
  • the half-shells are first pivoted into the position of Figure 2 , in which the nozzle portions, which are moved towards each other with partial introduction one in the other, define a profile of the delivery cross-section having a small extent and such therefore as to allow the nozzle to be inserted in the opening of the hood 8 which is delimited by the (circular) profile of the projection 17.
  • Figure 6 illustrates that operating position. Subsequent movement of the manifold in the axial direction Y is capable of moving the nozzle portions, with the profile 17 in correspondence with the grooves 16 which are substantially facing it.
  • a flange for connecting the hood to the tubular discharge pipe is designated 23 and is schematically indicated, that flange ensuring the fluid-tight connection between the hood and the pipe for discharging the air-like gases which are drawn in by the ventilation unit.
  • the invention thereby achieves the objects set out, resulting in the advantages set out over known solutions.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)
  • Compressor (AREA)
EP07121376A 2006-12-06 2007-11-23 Lüftergehäuse für eine Absaughaube Withdrawn EP1930601A3 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
ITPD20060446 ITPD20060446A1 (it) 2006-12-06 2006-12-06 Collettore a chiocciola, particolarmente per ventilatori da impiegarsi in cappe aspiranti

Publications (2)

Publication Number Publication Date
EP1930601A2 true EP1930601A2 (de) 2008-06-11
EP1930601A3 EP1930601A3 (de) 2012-05-09

Family

ID=38830361

Family Applications (1)

Application Number Title Priority Date Filing Date
EP07121376A Withdrawn EP1930601A3 (de) 2006-12-06 2007-11-23 Lüftergehäuse für eine Absaughaube

Country Status (3)

Country Link
EP (1) EP1930601A3 (de)
IT (1) ITPD20060446A1 (de)
RU (1) RU2450170C2 (de)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2009140854A1 (zh) * 2008-05-22 2009-11-26 山东大学 多功能离心风机
EP2338581A1 (de) * 2009-12-22 2011-06-29 ebm-papst Mulfingen GmbH & Co. KG Lüftereinheit für Filterlüfter
EP3193022A1 (de) * 2016-01-13 2017-07-19 Silverline Endüstri ve Ticaret Anonim Sirketi Zentrifugaler lüfter
GB2567928A (en) * 2017-08-25 2019-05-01 Ftnon Almelo B V Centrifugal fan and method for cleaning thereof
CN113027823A (zh) * 2021-03-10 2021-06-25 苏州格力士实业有限公司 一种易拆分体组装式涡旋式气泵

Family Cites Families (9)

* 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
CH672543A5 (de) * 1985-12-21 1989-11-30 Gebhardt Gmbh Wilhelm
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
JP3799734B2 (ja) * 1997-04-21 2006-07-19 富士工業株式会社 レンジフード
AU7901298A (en) * 1998-06-22 2000-01-10 Correa, Juan Carlos Carne Fan scroll assembly for the indoor unit of an air conditioner

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2009140854A1 (zh) * 2008-05-22 2009-11-26 山东大学 多功能离心风机
EP2338581A1 (de) * 2009-12-22 2011-06-29 ebm-papst Mulfingen GmbH & Co. KG Lüftereinheit für Filterlüfter
US8821129B2 (en) 2009-12-22 2014-09-02 Ebm-Papst Mulfingen Gmbh & Co. Kg Fan unit for filter fans
EP3193022A1 (de) * 2016-01-13 2017-07-19 Silverline Endüstri ve Ticaret Anonim Sirketi Zentrifugaler lüfter
GB2567928A (en) * 2017-08-25 2019-05-01 Ftnon Almelo B V Centrifugal fan and method for cleaning thereof
CN113027823A (zh) * 2021-03-10 2021-06-25 苏州格力士实业有限公司 一种易拆分体组装式涡旋式气泵

Also Published As

Publication number Publication date
RU2450170C2 (ru) 2012-05-10
EP1930601A3 (de) 2012-05-09
RU2007145232A (ru) 2009-06-10
ITPD20060446A1 (it) 2008-06-07

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