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WO2011080239A1 - Four - Google Patents

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Info

Publication number
WO2011080239A1
WO2011080239A1 PCT/EP2010/070738 EP2010070738W WO2011080239A1 WO 2011080239 A1 WO2011080239 A1 WO 2011080239A1 EP 2010070738 W EP2010070738 W EP 2010070738W WO 2011080239 A1 WO2011080239 A1 WO 2011080239A1
Authority
WO
WIPO (PCT)
Prior art keywords
shield
oven
spot welded
fan
wall
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/EP2010/070738
Other languages
English (en)
Inventor
Cemalettin Kalayci
Ahmet Ali Uslu
Davut Ayhan Serabatir
Ergin Arslan
Bulent Umur Cananoglu
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
Publication of WO2011080239A1 publication Critical patent/WO2011080239A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

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 motor.
  • At least one heater, at least one fan and a motor providing the drive of the fan are provided in ovens wherein the cooking process is performed by convection
  • the oven casing is divided into two compartments by means of a separator.
  • the heater, fan and motor are disposed in the compartment which remains between the rear wall of the casing and the separator and the other compartment forms a cooking chamber wherein foods to be cooked are placed.
  • the air heated by the heater is moved by the fan and delivered into the cooking chamber through the holes arranged on the separator and the food is provided to be cooked by means of heat transfer between the air and the food to be cooked.
  • the electromagnetic field and electromagnetic induction field occurring during the operation of the motor can cause the walls around the motor, especially the rear wall which is closest to the motor, enter in magnetic resonance.
  • the vibration due to the resonance reflects as noise to the user during the operation of the oven.
  • the aim of the present invention is the realization of an oven which is
  • the casing rear wall used in the oven realized in order to attain the aim of the present invention comprises a shield that is fixed at the same level with the fan and the motor.
  • the shield is non-magnetic.
  • a depression is formed on the rear wall at the same level with the fan and the motor.
  • the shield is disposed into the depression.
  • the rear wall especially the region thereof that is at the same level with the fan and motor, is prevented from vibrating by being affected by the occurring electromagnetic field and the consequent generation of noise is also prevented.
  • the depression and the shield are preferably circular.
  • the shield is produced from a non-magnetic material such as stainless inox, aluminum or nickel-copper. In order not to be affected by the electromagnetic field, preferably AISI 304 quality material is used.
  • the shield is fixed into the depression by preferably spot welding.
  • the shield is spot welded at two regions, being at equal intervals along a circular line close to its outer wall and from the center thereof. On the outer wall, twelve spot weldings are performed at thirty degree intervals, preferably angularly.
  • spot welding is performed along a circular line also at a third region between these two. On this line, three spot weldings are performed at a hundred and twenty degree intervals, preferably angularly.
  • the distance between the point at which the shield is spot welded from the center thereof and the point at which the shield is spot welded from the outer wall thereof is 2.5 times greater than the distance between the point at which the shield is spot welded from the center thereof and the point at which the shield is spot welded from a third region remaining between th outer wall and the center thereof.
  • Figure 1 - is the sideways schematic view of an oven.
  • Figure 2 - is the inner view of the rear wall in an embodiment of the
  • Figure 3 - is the view of detail A in Figure 2.
  • Figure 4 - is the sideways cross-sectional view of the rear wall in an embodiment of the present invention.
  • Figure 5 - is the view of detail B in Figure 4.
  • the oven (1 ) is of the type wherein the baking process is performed by convection, and comprises a casing (2), a rear wall (3) covering the rear surface of the casing (2), a cooking chamber (4) disposed in the casing (2) and wherein foods to be cooked are placed, at least one fan (5) disposed in the casing (2) and which moves the air, at least one motor (6) providing the drive of the fan (5) and a separator (7) that separates the cooking chamber (4) and the volume containing the fan (5) and the motor (6)
  • the rear wall (3) comprises a non-magnetic shield (9) fixed to the rear wall (3) so as to be aligned with the fan (5) and the motor (6) ( Figure 2, Figure 4 and Figure 5).
  • the vibration that occurs and the consequent noise are prevented by minimizing the effect of the electromagnetic field occurring during the operation of the motor (6) on the rear wall (3).
  • the depression (8) is shaped by deep drawing process.
  • the rear wall (3) comprises a depression (8) situated at the same level with the fan (5) and the motor (6 ).
  • the shield (9) is disposed into the depression (8).
  • the depression (8) and the shield (9) are circular.
  • the shield (9) is produced from a non-magnetic, preferably AISI 304 quality metal material.
  • the shield (9) can be produced from a material such as stainless inox, aluminum or nickel-copper.
  • the shield (9) is fixed into the depression (8) by spot welding.
  • the shield (9) is provided to be fixed into the depression (8) in an easy and effective way.
  • the shield (9) is spot welded at two regions, one being from the center thereof and others being from the outer wall thereof at angularly certain intervals (a).
  • the shield (9) is fixed into the depression (8) by being spot welded at angularly certain intervals ( ⁇ ) at a third region remaining between the outer wall and the center thereof.
  • the distance (H) between the point at which the shield (9) is spot welded from the center thereof and the point at which the shield (9) is spot welded from the outer wall thereof is 2.5 times greater than the distance (K) between the point at which the shield (9) is spot welded from the center thereof and the point at which the shield (9) is spot welded from a third region remaining between the outer wall and the center thereof ( Figure 3).
  • the fixing is provided to be more reliable and effective.
  • the oven (1 ) is provided to operate silently be minimizing the vibration occurring at the rear wall (3) due to the occurring electromagnetic field during the operation of the motor (6) and the fan (5).

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Baking, Grill, Roasting (AREA)

Abstract

La présente invention porte sur un four (1) dans lequel le processus de cuisson est exécuté par convection, lequel four comprenant une enceinte (2), une paroi postérieure (3) recouvrant la surface postérieure de l'enceinte (2), une chambre de cuisson (4) disposée dans l'enceinte (2) et dans laquelle on place les aliments à cuire, au moins un ventilateur (5) disposé dans l'enceinte (2) et brassant l'air, au moins un moteur (6) assurant l'entraînement du ventilateur (5) et un séparateur (7) séparant la chambre de cuisson (4) et le volume contenant le ventilateur (5) et le moteur (6).
PCT/EP2010/070738 2009-12-30 2010-12-24 Four Ceased WO2011080239A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
TR200909993 2009-12-30
TRA2009/09993 2009-12-30

Publications (1)

Publication Number Publication Date
WO2011080239A1 true WO2011080239A1 (fr) 2011-07-07

Family

ID=43778226

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2010/070738 Ceased WO2011080239A1 (fr) 2009-12-30 2010-12-24 Four

Country Status (1)

Country Link
WO (1) WO2011080239A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2015074832A1 (fr) * 2013-11-22 2015-05-28 Arcelik Anonim Sirketi Four

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5888541A (ja) * 1981-11-20 1983-05-26 Rinnai Corp 複合調理器
DE9310067U1 (de) * 1992-07-14 1993-09-30 Imex Corporation Ltd., Seoul Ofen mit Heizstrahler im fernen Infrarot
KR20010004788A (ko) 1999-06-29 2001-01-15 구자홍 가스오븐레인지의 소음저감장치

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5888541A (ja) * 1981-11-20 1983-05-26 Rinnai Corp 複合調理器
DE9310067U1 (de) * 1992-07-14 1993-09-30 Imex Corporation Ltd., Seoul Ofen mit Heizstrahler im fernen Infrarot
KR20010004788A (ko) 1999-06-29 2001-01-15 구자홍 가스오븐레인지의 소음저감장치

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2015074832A1 (fr) * 2013-11-22 2015-05-28 Arcelik Anonim Sirketi Four

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