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WO2014016031A1 - Four comprenant un ventilateur de circulation d'air - Google Patents

Four comprenant un ventilateur de circulation d'air Download PDF

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Publication number
WO2014016031A1
WO2014016031A1 PCT/EP2013/061870 EP2013061870W WO2014016031A1 WO 2014016031 A1 WO2014016031 A1 WO 2014016031A1 EP 2013061870 W EP2013061870 W EP 2013061870W WO 2014016031 A1 WO2014016031 A1 WO 2014016031A1
Authority
WO
WIPO (PCT)
Prior art keywords
shaft
oven
casing
opening
magnet
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.)
Ceased
Application number
PCT/EP2013/061870
Other languages
English (en)
Inventor
Burak AKCAN
Servet TURGUT
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.)
Arcelik AS
Original Assignee
Arcelik AS
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 Arcelik AS filed Critical Arcelik AS
Priority to EP13731046.2A priority Critical patent/EP2877787A1/fr
Publication of WO2014016031A1 publication Critical patent/WO2014016031A1/fr
Anticipated expiration legal-status Critical
Ceased 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
    • F24C15/32—Arrangements of ducts for hot gases, e.g. in or around baking ovens
    • F24C15/322—Arrangements of ducts for hot gases, e.g. in or around baking ovens with forced circulation

Definitions

  • the present invention relates to an oven comprising a fan that provides hot air circulation therein.
  • the hot air in the oven cavity is circulated by means of a fan, thus providing a homogeneous heat distribution.
  • a fan motor is placed onto the rear wall of the casing that forms the oven cavity and the fan motor rotates the fan in the oven cavity by means of a shaft passing through the casing rear wall.
  • An opening is arranged on the casing rear wall, through which the shaft passes and the diameter of the opening is much larger than the diameter of the shaft due to mechanisms at the end of the shaft such as flange disc, that fix the fan to the shaft.
  • a self-cleaning rotisserie oven is disclosed.
  • a bushing is provided between the shaft and the channel through which the shaft rotating the fan motor passes.
  • the inner diameter of the bushing is variable in the axial direction and furthermore an O-ring seal is placed between the bushing and the shaft.
  • the aim of the present invention is the realization of an oven comprising a fan providing hot air circulation therein and wherein the hot air in the oven cavity is prevented from leaking to the outer environment.
  • the motor of the fan providing the hot air circulation is mounted onto the casing rear wall and the motor shaft is connected to the fan in the oven cavity by passing through an opening larger than the diameter of the shaft, arranged on the casing rear wall.
  • a magnet fitted over the shaft and attached to the casing rear wall so as to cover the opening prevents the hot air in the oven cavity from leaking to outside by serving as a sealing gasket.
  • the circular disc shaped magnet has a larger diameter than that of the opening and with the effect of magnetic attraction, is attached onto the surface of the casing rear wall facing the motor and all around the opening so as to be concentric with the opening
  • the shaft hole located at the center of the magnet and through which the shaft passes has a larger diameter than that of the shaft, thus the shaft easily rotates in the shaft hole and the shaft is prevented from rubbing against the magnet and getting abraded.
  • amount of heat leakage out of the oven cavity is decreased, energy saving is provided and the fan motor is provided to be protected against high temperatures in the oven.
  • Figure 1 – is the schematic view of an oven.
  • Figure 2 – is the partial view of the casing situated in an oven and of a fan motor connected to the casing.
  • Figure 3 – is the view of detail D in Figure 2.
  • the oven (1) comprises an outer body, an oven cavity (2) situated in the outer body and wherein the cooking process is performed, a casing (3) produced from ferromagnetic metal material and defining the oven cavity (2), a motor (4) mounted to the casing (3) rear wall, a fan (5) connected to the motor (4) and providing the circulation of the hot air in the oven cavity (2), a shaft (6) providing the fan (5) to be driven by the motor (4) and an opening (7) arranged on the casing (3) rear wall and through which the shaft (6) passes.
  • the oven (1) of the present invention comprises a magnet (8) fitted over the shaft (6) and attached to the casing (3) rear wall with the effect of magnetic attraction so as to cover the opening (7).
  • the magnet (8) surrounds the shaft (6), covers the opening (7), and provides leak-proofing, thus preventing heat in the oven cavity (2) from leaking through the opening (7) and affecting the motor (4). Due to its structure, the magnet (8) is not affected by the oven cavity (2) heat, is not deformed and provides a secure leak-proofing.
  • the magnet (8) is disc shaped and has a larger diameter than that of the opening (7).
  • the magnet (8) is attached to the rear surface of the casing (3) rear wall facing the motor (4).
  • the magnet (8) comprises a shaft hole (9) arranged at the center thereof and having a larger diameter than that of the shaft (6) so that the shaft (6) can easily pass therethrough (for example shaft (6) diameter: 6 mm, shaft hole (9) diameter: 6.5 mm)
  • the shaft (6) is provided to easily move in the shaft hole (9) while operating.
  • the shaft (6) is prevented from rubbing against the magnet (8) with a hardness value greater than that of the shaft (6) and thus the outer surface of the shaft (6) is prevented from being abraded.
  • the magnet (8) is attached to the edge of the circular opening (7), hence to the surface of the casing (3) rear wall facing the motor (4) so as to be concentric with the opening (7)
  • the shaft (6) is passed through the shaft hole (9), the motor (4) is mounted to the casing (3) rear wall and the fan (5) is connected to the end of the shaft (6) inside the oven cavity (2).
  • the shaft (6) passes through the magnet (8) without touching the inner wall of the shaft hole (9).
  • the surface area of the magnet (8) contacting the casing (3) rear wall is much larger than the surface area of the inner wall of the shaft hole (9), thus it is not possible for the shaft (6) to displace the magnet (8) with the effect of magnetic attraction and the concentric positions of the shaft (6) – the shaft hole (9) – the opening (7) are preserved.
  • the cross-sectional area remaining between the shaft (6) and the opening (7) and through which the hot air may leak from the oven cavity (2) to outside is a few hundred mm 2 (for example 200 – 300 mm 2 ) and in the embodiment of the present invention wherein the magnet (8) covers the opening (7), the cross-sectional area between the shaft hole (9) and the shaft (6) is reduced to a few mm 2 (for example 4 – 6 mm 2 ).
  • the shaft (6) freely rotates in the shaft hole (9) while the motor (4) is operated. Thus, amount of heat leak through the narrow gap between the shaft (6) and the shaft hole (9) is not significant.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Electric Stoves And Ranges (AREA)
PCT/EP2013/061870 2012-07-27 2013-06-10 Four comprenant un ventilateur de circulation d'air Ceased WO2014016031A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP13731046.2A EP2877787A1 (fr) 2012-07-27 2013-06-10 Four comprenant un ventilateur de circulation d'air

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
TR201208809 2012-07-27
TRA2012/08809 2012-07-27

Publications (1)

Publication Number Publication Date
WO2014016031A1 true WO2014016031A1 (fr) 2014-01-30

Family

ID=48692425

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2013/061870 Ceased WO2014016031A1 (fr) 2012-07-27 2013-06-10 Four comprenant un ventilateur de circulation d'air

Country Status (2)

Country Link
EP (1) EP2877787A1 (fr)
WO (1) WO2014016031A1 (fr)

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1441179A (en) * 1973-12-31 1976-06-30 Magnetic Seal Corp Rotary seals
DE2658624A1 (de) * 1976-12-23 1978-06-29 Debag Deutsche Backofenbau Vorrichtung zum abdichten der luefterwelle eines backofens
FR2551185A1 (fr) * 1983-03-25 1985-03-01 Fiescourt Claude Chaleur tournante pour fours
DE3622547C1 (en) * 1986-07-04 1987-04-23 Eloma Gmbh Baking, cooking or grilling appliance
WO2009091641A2 (fr) 2008-01-15 2009-07-23 Premark Feg L.L.C Four de rôtisserie autonettoyant avec dispositif d'étanchéité d'arbre de ventilateur
EP2175178A1 (fr) * 2007-08-08 2010-04-14 Sharp Kabushiki Kaisha Garniture d'etancheite, dispositif de cuisson a la vapeur et procede de fabrication de ce dispositif

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1441179A (en) * 1973-12-31 1976-06-30 Magnetic Seal Corp Rotary seals
DE2658624A1 (de) * 1976-12-23 1978-06-29 Debag Deutsche Backofenbau Vorrichtung zum abdichten der luefterwelle eines backofens
FR2551185A1 (fr) * 1983-03-25 1985-03-01 Fiescourt Claude Chaleur tournante pour fours
DE3622547C1 (en) * 1986-07-04 1987-04-23 Eloma Gmbh Baking, cooking or grilling appliance
EP2175178A1 (fr) * 2007-08-08 2010-04-14 Sharp Kabushiki Kaisha Garniture d'etancheite, dispositif de cuisson a la vapeur et procede de fabrication de ce dispositif
WO2009091641A2 (fr) 2008-01-15 2009-07-23 Premark Feg L.L.C Four de rôtisserie autonettoyant avec dispositif d'étanchéité d'arbre de ventilateur

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See also references of EP2877787A1 *

Also Published As

Publication number Publication date
EP2877787A1 (fr) 2015-06-03

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