EP1865263A2 - Integrierte Lüfteranordnung zur Kühlung eines Ofens - Google Patents
Integrierte Lüfteranordnung zur Kühlung eines Ofens Download PDFInfo
- 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- Withdrawn
Links
Images
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)
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 (de) | 2007-12-12 |
EP1865263A3 EP1865263A3 (de) | 2010-01-06 |
Family
ID=38441638
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP07109249A Withdrawn EP1865263A3 (de) | 2006-05-31 | 2007-05-30 | Integrierte Lüfteranordnung zur Kühlung eines Ofens |
Country Status (2)
Country | Link |
---|---|
EP (1) | EP1865263A3 (de) |
IT (1) | ITMI20061067A1 (de) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP1806540A2 (de) * | 2006-01-10 | 2007-07-11 | Societa'Europea Componenti Elletrici S.p.A. | Ventilator, insbesondere zur Belüftung von Küchenöfen |
ITTO20100712A1 (it) * | 2010-08-25 | 2012-02-26 | Indesit Co Spa | Forno di cottura, in particolare di uso domestico, di tipologia migliorata |
EP2899467A3 (de) * | 2014-01-20 | 2015-09-23 | Gorenje d.d. | Verbindung an einem Haushaltgerät |
Citations (5)
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 |
EP1251281A1 (de) * | 2001-04-17 | 2002-10-23 | BVM Systems S.p.A. | Tangentielle Lüftungsvorrichtung |
DE102004008465A1 (de) * | 2004-02-20 | 2005-09-08 | Electrolux Home Products Corporation N.V. | Verfahren und Vorrichtung zum Be- und/oder Entlüften eines Garofens |
JP2006220021A (ja) * | 2005-02-09 | 2006-08-24 | Nippon Densan Corp | 送風ファンおよび電子機器 |
Family Cites Families (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
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 |
-
2006
- 2006-05-31 IT ITMI20061067 patent/ITMI20061067A1/it unknown
-
2007
- 2007-05-30 EP EP07109249A patent/EP1865263A3/de not_active Withdrawn
Patent Citations (5)
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 |
EP1251281A1 (de) * | 2001-04-17 | 2002-10-23 | BVM Systems S.p.A. | Tangentielle Lüftungsvorrichtung |
DE102004008465A1 (de) * | 2004-02-20 | 2005-09-08 | Electrolux Home Products Corporation N.V. | Verfahren und Vorrichtung zum Be- und/oder Entlüften eines Garofens |
JP2006220021A (ja) * | 2005-02-09 | 2006-08-24 | Nippon Densan Corp | 送風ファンおよび電子機器 |
Non-Patent Citations (1)
Title |
---|
DATABASE WPI Week 200717 Thomson Scientific, London, GB; AN 2007-159984 XP002556318 -& CN 1 727 689 A (LG ELECTRONIC TIANJIN ELECTRIC APPLIANCE) 1 February 2006 (2006-02-01) * |
Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP1806540A2 (de) * | 2006-01-10 | 2007-07-11 | Societa'Europea Componenti Elletrici S.p.A. | Ventilator, insbesondere zur Belüftung von Küchenöfen |
EP1806540A3 (de) * | 2006-01-10 | 2008-10-22 | Societa'Europea Componenti Elletrici S.p.A. | Ventilator, insbesondere zur Belüftung von Küchenöfen |
ITTO20100712A1 (it) * | 2010-08-25 | 2012-02-26 | Indesit Co Spa | Forno di cottura, in particolare di uso domestico, di tipologia migliorata |
WO2012025869A1 (en) * | 2010-08-25 | 2012-03-01 | Indesit Company S.P.A. | Improved cooking oven, in particular for household use |
EP3088805A1 (de) * | 2010-08-25 | 2016-11-02 | Indesit Company S.p.A. | Verbesserter kochherd, im besonderen für den haushalt |
EP2899467A3 (de) * | 2014-01-20 | 2015-09-23 | Gorenje d.d. | Verbindung an einem Haushaltgerät |
Also Published As
Publication number | Publication date |
---|---|
ITMI20061067A1 (it) | 2007-12-01 |
EP1865263A3 (de) | 2010-01-06 |
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18D | Application deemed to be withdrawn |
Effective date: 20110104 |