EP1865263A2 - Ensemble ventilateur intégré pour le refroidissement d'un four - Google Patents

Ensemble ventilateur intégré pour le refroidissement d'un four Download PDF

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Publication number
EP1865263A2
EP1865263A2 EP07109249A EP07109249A EP1865263A2 EP 1865263 A2 EP1865263 A2 EP 1865263A2 EP 07109249 A EP07109249 A EP 07109249A EP 07109249 A EP07109249 A EP 07109249A EP 1865263 A2 EP1865263 A2 EP 1865263A2
Authority
EP
European Patent Office
Prior art keywords
fan
fan assembly
flue
opening
scroll 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.)
Withdrawn
Application number
EP07109249A
Other languages
German (de)
English (en)
Other versions
EP1865263A3 (fr
Inventor
Gaetano Pagano
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.)
Imper SpA
Original Assignee
Imper 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 Imper SpA filed Critical Imper SpA
Publication of EP1865263A2 publication Critical patent/EP1865263A2/fr
Publication of EP1865263A3 publication Critical patent/EP1865263A3/fr
Withdrawn legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24C—DOMESTIC STOVES OR RANGES ; DETAILS OF DOMESTIC STOVES OR RANGES, OF GENERAL APPLICATION
    • F24C15/00—Details
    • F24C15/006—Arrangements for circulation of cooling air
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D17/00—Radial-flow pumps, e.g. centrifugal pumps; Helico-centrifugal pumps
    • F04D17/02—Radial-flow pumps, e.g. centrifugal pumps; Helico-centrifugal pumps having non-centrifugal stages, e.g. centripetal
    • F04D17/04—Radial-flow pumps, e.g. centrifugal pumps; Helico-centrifugal pumps having non-centrifugal stages, e.g. centripetal of transverse-flow type
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24C—DOMESTIC STOVES OR RANGES ; DETAILS OF DOMESTIC STOVES OR RANGES, OF GENERAL APPLICATION
    • F24C15/00—Details
    • F24C15/20—Removing cooking fumes
    • F24C15/2007—Removing cooking fumes from oven cavities

Definitions

  • the present invention relates to an integrated fan assembly for cooling a food-cooking oven.
  • food-cooking ovens normally comprise a ventilation system for circulating the air and so ensuring an even temperature inside the oven, and for cooling the front of the oven where the door handle and electronic oven control instruments are located.
  • a tangential fan is known to be used, in which the impeller is a so-called “flow-through” or “cross-flow” tangential fan, i.e. a fan designed to work with airflow substantially tangent to its outside diameter, and which is normally longer than its diameter; the fan is powered by an electric motor and housed inside a scroll casing shaped to define an airflow channel about the fan; the scroll casing has an inlet or intake opening and an outlet or delivery opening spaced angularly apart about the rotation axis of the fan; and the delivery opening is connected to a conduit which directs the airflow produced by the fan towards the front of the oven.
  • the impeller is a so-called “flow-through” or “cross-flow” tangential fan, i.e. a fan designed to work with airflow substantially tangent to its outside diameter, and which is normally longer than its diameter; the fan is powered by an electric motor and housed inside a scroll casing shaped to define an airflow channel about the fan; the scroll casing has
  • Fans of the above type are unsatisfactory in terms of easy manufacture and installation, by requiring the assembly of various separate component parts, as well as in terms of performance, by only providing for cooling, as opposed to other useful functions such as exhausting fumes, gas and vapour from the oven.
  • the present invention therefore relates to an integrated fan assembly for cooling an oven, as claimed in the accompanying Claim 1, and to an oven featuring such a fan assembly.
  • the fan assembly according to the invention is cheap and easy to produce, assemble and install, by virtue of the scroll casing and the intake conduit (and possibly also the flue or at least an inlet portion of it) being formed in one piece of molded plastic material, thus enabling even complex shapes to be achieved cheaply and easily.
  • the fan assembly provides for both cooling, and for exhausting fumes, gas and vapour from the oven.
  • an integrated fan assembly 1 for cooling a food-cooking oven comprises a scroll casing 2; and a fan 3 housed inside scroll casing 2 to rotate about a rotation axis R and powered by an electric motor 4 by means of a shaft 5.
  • Scroll casing 2 extends substantially along axis R and about fan 3, defines an inner cavity 6 housing fan 3, and comprises two opposite lateral walls 8, 9 substantially parallel to each other and perpendicular to axis R, and a conducting wall 10 connecting lateral walls 8, 9.
  • Conducting wall 10 comprises a curved portion 11 curving about axis R; and a substantially flat bottom portion 12 connected to curved portion 11.
  • Conducting wall 10 extends longitudinally between lateral walls 8 and 9 and transversely between two end edges 14, 15 spaced angularly apart and respectively defining - with reference to the rotation direction of fan 3 indicated by the arrow in Figure 1 - an intake opening 16 and a delivery opening 17 of scroll casing 2.
  • Intake opening 16 and delivery opening 17 are located along a radially outer peripheral edge 18 of fan 3, and are spaced angularly apart about axis R.
  • Outside scroll casing 2 i.e. outside cavity 6, lateral wall 8 supports motor 4 in known manner not shown or described by the sake of simplicity.
  • Lateral wall 9 has an auxiliary intake opening 19 formed through lateral wall 9, along axis R, and connected to an intake flue 20; and fan assembly 1 also comprises a delivery conduit 21 projecting from scroll casing 2.
  • Scroll casing 2 (defined by lateral walls 8, 9 and conducting wall 10) is formed integrally in one piece with delivery conduit 21 and flue 20 to form a one-piece body 25 of molded plastic material, e.g. polyamide.
  • fan 3 is a substantially known tangential fan. More specifically, fan 3 is substantially cylindrical and hollow, and comprises a number of longitudinal blades 30 substantially parallel to one another and to axis R; blades 30 have a cross section curving about axis R, and are shaped to produce an airflow substantially tangent to peripheral edge 18; fan 3 is substantially elongated along axis R, extends between two axial ends 31, 32, and is longer than its diameter; blades 30 are fitted to two lateral members 33, 34; lateral member 33 is defined by a disk fitted centrally with a hub 36 in which shaft 5 is inserted; and lateral member 34 is substantially annular, and comprises a central, substantially circular opening 37 located along axis R and aligned with auxiliary intake opening 19.
  • Fan 3 is fitted to and projects from scroll casing 2 at axial end 31 by means of shaft 5 fitted through lateral wall 8 and fixed inside hub 36; and axial end 32 has opening 37 and no support or mechanical connection to scroll casing 2.
  • flue 20 extends substantially perpendicularly to auxiliary intake opening 19, and comprises a tubular member 40 located outside scroll casing 2 and adjacent to lateral wall 9, and bounded by a lateral wall 41. More specifically, flue 20 extends along lateral wall 9, substantially perpendicularly to axis R and vertically, between two opposite, respectively bottom and top, ends 42, 43.
  • Flue 20 has a first opening 44 located substantially at bottom end 42 and close to bottom portion 12; and at least one optional second opening 45 located at end 43 and/or formed in lateral wall 41.
  • opening 45 is located at top end 43 and also formed in lateral wall 41.
  • Delivery conduit 21 is substantially tangent to fan 3 and scroll casing 2, extends substantially parallel to bottom portion 12, is connected to delivery opening 17 by a closed, annular - in the example shown, rectangular - peripheral frame 46, and terminates with an open free end 47.
  • delivery conduit 21 is substantially trapezoidal with curved sides. More specifically, delivery conduit 21 comprises two lateral walls 48, and a main wall 49 connecting lateral walls 48; and lateral walls 48 are curved, diverge from each other from delivery opening 17 to free end 47, and taper towards free end 47.
  • Delivery conduit 21 has a substantially U-shaped cross section, and lateral walls 48 have respective bottom edges 50 substantially aligned with bottom portion 12 of scroll casing 2 and cooperating, in use, with an outer supporting surface 51 defining a further wall, substantially facing main wall 49, of the conduit.
  • Fan assembly 1 has fastening members 52 for connection to supporting surface 51, e.g. fast-fit fastening members comprising L-shaped teeth 53 projecting downwards from edges 50 to engage respective slots 54 formed in supporting surface 51. Fan assembly 1 may also be fixed to supporting surface 51 by screws or rivets inserted through holes 55 in body 25.
  • fastening members 52 for connection to supporting surface 51, e.g. fast-fit fastening members comprising L-shaped teeth 53 projecting downwards from edges 50 to engage respective slots 54 formed in supporting surface 51.
  • Fan assembly 1 may also be fixed to supporting surface 51 by screws or rivets inserted through holes 55 in body 25.
  • Free end 47 of delivery conduit 21 has tabs 56, e.g. substantially parallel to one another, which project from main wall 49 to supporting surface 51, inside delivery conduit 21, and define both reinforcing members for structurally reinforcing the delivery conduit, and flow-deflecting members.
  • fan assembly 1 is installed in a substantially known food-cooking oven 60 comprising a cooking chamber 61 closed at the front by a door 62; and an operating compartment 63 located over chamber 61, separated from chamber 61 by a partition 64, and housing various known component parts and/or electronic instruments (not shown) of oven 60.
  • Fan assembly 1 is housed inside compartment 63, and rests on a surface of partition 64 defining supporting surface 51.
  • Flue 20 is connected to chamber 61 via a hole 65 formed in partition 64 and communicating with end 42 of flue 20.
  • Both auxiliary flows F2, F3 are drawn in through auxiliary intake opening 19 into fan 3, and flow together with flow F1 to form a flow F4 substantially tangent to peripheral edge 18, and which flows through delivery opening 17 into delivery conduit 21 to cool the front of oven 60 and door 62.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)
  • Baking, Grill, Roasting (AREA)
  • Constitution Of High-Frequency Heating (AREA)
EP07109249A 2006-05-31 2007-05-30 Ensemble ventilateur intégré pour le refroidissement d'un four Withdrawn EP1865263A3 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
ITMI20061067 ITMI20061067A1 (it) 2006-05-31 2006-05-31 Gruppo ventilatore integrato di raffreddamento di un forno di cottura

Publications (2)

Publication Number Publication Date
EP1865263A2 true EP1865263A2 (fr) 2007-12-12
EP1865263A3 EP1865263A3 (fr) 2010-01-06

Family

ID=38441638

Family Applications (1)

Application Number Title Priority Date Filing Date
EP07109249A Withdrawn EP1865263A3 (fr) 2006-05-31 2007-05-30 Ensemble ventilateur intégré pour le refroidissement d'un four

Country Status (2)

Country Link
EP (1) EP1865263A3 (fr)
IT (1) ITMI20061067A1 (fr)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1806540A3 (fr) * 2006-01-10 2008-10-22 Societa'Europea Componenti Elletrici S.p.A. Ventilateur, en particulier pour la ventilation de fours de cuisine
ITTO20100712A1 (it) * 2010-08-25 2012-02-26 Indesit Co Spa Forno di cottura, in particolare di uso domestico, di tipologia migliorata
EP2899467A3 (fr) * 2014-01-20 2015-09-23 Gorenje d.d. Connexion à un appareil ménager
EP4214445A4 (fr) * 2020-09-17 2024-10-16 Femas Metal San. Ve Tic. A.S. Four doté d'un conduit d'écoulement d'air comprenant une buse

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3223313A (en) * 1964-02-04 1965-12-14 Lau Blower Co Air moving device
DE4211755A1 (de) * 1992-04-08 1993-10-14 Licentia Gmbh Back- und Bratofen mit einer Kühlabluft- und Wrasenabzugseinrichtung
ITMI20010219U1 (it) * 2001-04-17 2002-10-17 M Systems Spa B V Motoventilatore tangenziale innovativo
DE102004008465A1 (de) * 2004-02-20 2005-09-08 Electrolux Home Products Corporation N.V. Verfahren und Vorrichtung zum Be- und/oder Entlüften eines Garofens
CN1727689A (zh) * 2004-07-26 2006-02-01 乐金电子(天津)电器有限公司 具有离心扇和横流扇的送风机
JP2006220021A (ja) * 2005-02-09 2006-08-24 Nippon Densan Corp 送風ファンおよび電子機器

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1806540A3 (fr) * 2006-01-10 2008-10-22 Societa'Europea Componenti Elletrici S.p.A. Ventilateur, en particulier pour la ventilation de fours de cuisine
ITTO20100712A1 (it) * 2010-08-25 2012-02-26 Indesit Co Spa Forno di cottura, in particolare di uso domestico, di tipologia migliorata
WO2012025869A1 (fr) * 2010-08-25 2012-03-01 Indesit Company S.P.A. Four de cuisson amélioré, en particulier à usage domestique
EP3088805A1 (fr) * 2010-08-25 2016-11-02 Indesit Company S.p.A. Four de cuisson amélioré, notamment à usage domestique
EP2899467A3 (fr) * 2014-01-20 2015-09-23 Gorenje d.d. Connexion à un appareil ménager
EP4214445A4 (fr) * 2020-09-17 2024-10-16 Femas Metal San. Ve Tic. A.S. Four doté d'un conduit d'écoulement d'air comprenant une buse

Also Published As

Publication number Publication date
EP1865263A3 (fr) 2010-01-06
ITMI20061067A1 (it) 2007-12-01

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