EP2191202A1 - Ofen - Google Patents

Ofen

Info

Publication number
EP2191202A1
EP2191202A1 EP08787361A EP08787361A EP2191202A1 EP 2191202 A1 EP2191202 A1 EP 2191202A1 EP 08787361 A EP08787361 A EP 08787361A EP 08787361 A EP08787361 A EP 08787361A EP 2191202 A1 EP2191202 A1 EP 2191202A1
Authority
EP
European Patent Office
Prior art keywords
water
oven
reservoir
cooking chamber
cleaning
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.)
Granted
Application number
EP08787361A
Other languages
English (en)
French (fr)
Other versions
EP2191202B1 (de
Inventor
Asli Kayihan
Husnu Kerpicci
Emre Oguz
Nursel Karakaya
Sabahattin Hocaoglu
Osman G. Ersoy
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 EP2191202A1 publication Critical patent/EP2191202A1/de
Application granted granted Critical
Publication of EP2191202B1 publication Critical patent/EP2191202B1/de
Not-in-force legal-status Critical Current
Anticipated expiration legal-status Critical

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
    • F24C14/00—Stoves or ranges having self-cleaning provisions, e.g. continuous catalytic cleaning or electrostatic cleaning
    • F24C14/005—Stoves or ranges having self-cleaning provisions, e.g. continuous catalytic cleaning or electrostatic cleaning using a cleaning liquid

Definitions

  • the present invention relates to an oven that has a self cleaning feature.
  • the self cleaning feature in ovens is a user demanded feature since cleaning the interior of an oven is difficult.
  • the particles like oil that are ejected from food during cooking adhere to the inner walls of the oven and cleaning the dirt becomes hard when the oven is used a couple of times without cleaning.
  • the most widely used self cleaning function in ovens is the pyrolytic cleaning method; however, alternative cleaning methods are developed since there are some safety issues.
  • One of these methods is the ultrasonic cleaning. In the ultrasonic cleaning method, the dirt adhering to the oven surfaces are detached by the sound waves generated from an ultrasonic source; however, water is required for cleaning the surfaces entirely and to discharge the dirt.
  • the water in contact with the oven surfaces is vibrated by the ultrasonic source and the liquid is made to move.
  • the main mechanism of the cleaning is the energy generated with the microscopic cavitation bubbles formed in the vibrating liquid. These bubbles maintain the dirt on the surface to be separated from the surface by detaching or by breaking down.
  • an oscillating source such as an ultrasonic head is used together with water for cleaning any glass, enamel or steel surface of an oven.
  • water is poured on these surfaces and cleaning process is performed by generating ultrasonic waves by the ultrasonic head.
  • a piezoelectric transducer is used as the ultrasonic head. Water is activated with high frequency oscillations by operating the vibration source. The water poured again on the lower surface is vaporized by means of a heater included in the system for cleaning the non-horizontal surfaces of the oven, and the vaporized water is made to condense on the oven surfaces.
  • the aim of the present invention is the realization of an oven that self cleans with the assistance of an ultrasonic device and water.
  • an ultrasonic device is used for detaching by vibration the dirt adhering to the walls surrounding the cooking chamber forming the interior volume, for example the vertical surfaces on the side walls, rear wall and the front door, during the cooking process.
  • water is used to completely clean the dirt particles detached or the bonds weakened from the surfaces.
  • a reservoir for storing the water used in the cleaning process by the ultrasonic device is provided that is preferably arranged on the upper side of the body and by means of openings on a water conduit, configured as a pipe or channel connected to the reservoir, water is delivered on the surfaces surrounding the cooking chamber, forming a water film on the surfaces.
  • the ultrasonic device When water is delivered by the water conduit on the surfaces, the ultrasonic device is operated, water on the surfaces is vibrated and cleaning effectiveness is increased. Moreover, elements like the ultrasonic device, reservoir and water conduit used for cleaning do not occupy space in the cooking chamber.
  • the water reservoir in order to clean the hard-to-clean vertical surfaces of the side walls and the rear wall in the oven, the water reservoir is emplaced to the back side of the body and the water conduit extends from the back to the front along the upper sides of the side walls and the rear wall, forming at least a partial frame on the upper portion of the body.
  • the water conduit transmits the water received from the reservoir along the upper sides of the side walls and the rear wall. The water leaking out from the openings arranged along the water conduit, slides downwards from the upper sides of the inner surfaces and wets these surfaces.
  • the surfaces surrounding the cooking chamber are covered by hydrophilic material that can transiently bond with water.
  • hydrophilic material that can transiently bond with water.
  • the water conduit is emplaced on the body sloping from the back to the front so that water can reach easily to the front from the water reservoir at the rear.
  • water is controllably delivered from the reservoir to the water conduit by flow control elements such as pump, shutter or valve activated during the cleaning process.
  • the user can easily add water into a water drawer on the front side of the body, for example on the front panel, without reaching the reservoir at the rear and water added to the water drawer fills the reservoir by means of a pipe.
  • the dirty water flowing from the surfaces of the cooking chamber to the base during cleaning is collected in the dirt water drawer situated under the body and when the dirt water drawer is full, the user removes thereof from the body and discharges by means of a drain conduit.
  • Figure 1 - is the schematic view of an oven.
  • Figure 2 - is the schematic view of an oven, ultrasonic device, cleaning water reservoir, water drawer, dirty water drawer and water supply conduits.
  • the oven (1) comprises a body, a cooking chamber (2) wherein the cooking process is performed, two side walls (3) a rear wall (4) and a front door (not shown in the figures) forming the surfaces (Y) enclosing the cooking chamber (2), and an ultrasonic device (5) emplaced on the side walls (3) or the rear wall (4), preferably between the body and the walls (3, 4), that provides cleaning the cooking chamber (2) by generating ultrasound vibrations.
  • the oven (1) of the present invention comprises a reservoir (6) for storing the water used in the cleaning process by the ultrasonic device (5), that is preferably arranged on the upper side of the body and one or more water conduits (7) that deliver the water received from the reservoir (6) to the surfaces (Y) surrounding the cooking chamber (2) and more than one opening (8) situated on the water conduit (7), arranged along the sides of the surfaces (Y) for pouring the water from the water conduit (7) onto the surfaces (Y) to form a water film on the surfaces (Y).
  • the ultrasonic device (5) is operated when water is delivered onto the surfaces (Y) surrounding the cooking chamber (2), the water film on the surfaces (Y) is vibrated and cleaning effectiveness is increased. Moreover, the ultrasonic device (5), reservoir (6) and the water conduit (7) used for the cleaning do not occupy space in the cooking chamber (2).
  • the hard-to-clean inner surfaces (Y) of the side walls (3) and the rear wall (4) are intended to be cleaned.
  • the reservoir (6) is emplaced at the back side on the body and the water conduit (7), configured as a pipe or channel, extends from the back to the front along the upper sides of the side walls (3) and the rear wall (4) surrounding at least partially the upper portion of the body.
  • the water conduit (7) passes the water received from the reservoir (6) along the upper sides of the inner surfaces (Y) of the side walls (3) and the rear wall (4) and the water leaking out from the openings (8) arranged along the water conduit (7) slides downwards from the upper sides of the surfaces (Y) and wets the surfaces (Y) surrounding the cooking chamber (2) ( Figure 2).
  • the surfaces (Y) surrounding the cooking chamber (2) are covered by water bond (hydrophilic) material.
  • water bond hydrophilic
  • the water conduit (7) is emplaced on the body sloping from the back to the front so that water can reach easily to the front of the body along the upper sides of the side walls (3) from the water reservoir (6) situated at the rear.
  • flow control elements such as pump, shutter or valve between the reservoir (6) and the water conduit (7) are used, that are activated during the cleaning process for delivering water and water in the reservoir (6) is delivered controllably to the water conduit (7) by means of these elements.
  • the oven (1) comprises a water drawer (9) situated on the front side of the body, for example on the front panel, enabling the user to easily add water from the front into the reservoir (6) at the rear and the water added flows to the reservoir (6) by means of a pipe (B) filling the reservoir (6) and a dirty water drawer (10) emplaced under the body wherein the dirty water flowing from the surfaces (Y) to the base of the cooking chamber (2) during cleaning is collected.
  • a water drawer (9) situated on the front side of the body, for example on the front panel, enabling the user to easily add water from the front into the reservoir (6) at the rear and the water added flows to the reservoir (6) by means of a pipe (B) filling the reservoir (6) and a dirty water drawer (10) emplaced under the body wherein the dirty water flowing from the surfaces (Y) to the base of the cooking chamber (2) during cleaning is collected.
  • the cleaning mode is selected by e.g. a button on the front panel for performing interior cleaning in the oven (1)
  • the shutters or valves between the reservoir (6) and the water conduit (7) are opened, and the water in the reservoir (6) flows to the water conduit (7).
  • Water proceeding from the water conduit (7) flows from the openings (8) and wets the surfaces (Y).
  • the ultrasonic device (5) emplaced on the rear wall (4) or the side walls (3) operates and vibrates the water flowing on the surfaces (Y).
  • the ultrasonic device (5) is activated and water on the surfaces (Y) is vibrated, the dirt on the surfaces (Y) is removed by means of the formed micro bubbles. Accordingly, application difficulties, for example filling the interior volume of the body with water, are eliminated and energy savings is provided.
  • cleaning particularly the inner surfaces (Y) of the side walls (3) and the rear wall (4) is made easier and since the cleaning system does not occupy space inside the body, the usable space of the cooking chamber (2) does not get smaller.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Electric Ovens (AREA)
  • Cleaning By Liquid Or Steam (AREA)
EP08787361.8A 2007-08-24 2008-08-21 Ofen Not-in-force EP2191202B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
TR200705897 2007-08-24
PCT/EP2008/060914 WO2009027296A1 (en) 2007-08-24 2008-08-21 An oven

Publications (2)

Publication Number Publication Date
EP2191202A1 true EP2191202A1 (de) 2010-06-02
EP2191202B1 EP2191202B1 (de) 2013-07-10

Family

ID=39852347

Family Applications (1)

Application Number Title Priority Date Filing Date
EP08787361.8A Not-in-force EP2191202B1 (de) 2007-08-24 2008-08-21 Ofen

Country Status (2)

Country Link
EP (1) EP2191202B1 (de)
WO (1) WO2009027296A1 (de)

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19838864C2 (de) * 1998-08-26 2001-12-13 Rational Ag Verfahren zum Reinigen eines Gargeräts sowie dazu verwendete Vorrichtung
DE10127872B4 (de) * 2001-06-08 2004-08-12 Miwe Michael Wenz Gmbh Verfahren zur Reinigung einer Vorrichtung zum Temperieren von Lebensmitteln und Vorrichtung zum Temperieren von Lebensmitteln
US7556034B2 (en) * 2003-04-03 2009-07-07 Antonio Augusto De Miranda Grieco Self-cleaning kitchen-range and assembly couplable to a surface

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO2009027296A1 *

Also Published As

Publication number Publication date
WO2009027296A1 (en) 2009-03-05
EP2191202B1 (de) 2013-07-10

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