EP1712845A1 - Steam oven with variable vacuum duct for stream extraction - Google Patents

Steam oven with variable vacuum duct for stream extraction Download PDF

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Publication number
EP1712845A1
EP1712845A1 EP05425239A EP05425239A EP1712845A1 EP 1712845 A1 EP1712845 A1 EP 1712845A1 EP 05425239 A EP05425239 A EP 05425239A EP 05425239 A EP05425239 A EP 05425239A EP 1712845 A1 EP1712845 A1 EP 1712845A1
Authority
EP
European Patent Office
Prior art keywords
cooking chamber
ventilation
steam
mobile wall
outer walls
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
EP05425239A
Other languages
German (de)
French (fr)
Other versions
EP1712845B1 (en
Inventor
Filippo Filippi
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.)
FILIPPI Srl
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FILIPPI Srl
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Publication date
Application filed by FILIPPI Srl filed Critical FILIPPI Srl
Priority to DE602005007469T priority Critical patent/DE602005007469D1/en
Priority to PT05425239T priority patent/PT1712845E/en
Priority to AT05425239T priority patent/ATE398267T1/en
Priority to EP05425239A priority patent/EP1712845B1/en
Priority to ES05425239T priority patent/ES2308421T3/en
Publication of EP1712845A1 publication Critical patent/EP1712845A1/en
Application granted granted Critical
Publication of EP1712845B1 publication Critical patent/EP1712845B1/en
Not-in-force 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
    • F24C15/20—Removing cooking fumes
    • F24C15/2007—Removing cooking fumes from oven cavities

Definitions

  • the present patent concerns electrical household appliances for the kitchen and in particular steam ovens.
  • These steam ovens comprise a tank for the water to be vaporised, a pump for lifting the water, a vaporiser.
  • a ventilation system extracts the steam from inside the cooking chamber so as to prevent saturation inside said cooking chamber.
  • Current ovens also comprise a ventilation system suited to cool the outer walls of the cooking chamber so that the heat is not transmitted to the outer walls of the oven or to the walls of the furniture unit that contains the oven.
  • the cooling ventilation system and the steam extraction system are integrated together so that the ventilation system also extracts the steam.
  • the ventilation system which extracts the steam from the cooking chamber and cools the outer walls of the cooking chamber involves no regulation, except for the fan rotation speed. In this way the extraction of steam from the cooking chamber and the ventilation of the outer walls of said cooking chamber are connected to each other.
  • the aim of the new oven is to modulate the extraction of steam from the cooking chamber while maintaining adequate ventilation of the outer walls of the cooking chamber itself.
  • Another aim of the new oven is to properly cool the outer walls of the cooking chamber and at the same time adequately extract the steam from the inside of said cooking chamber with a single ventilation system.
  • the new steam oven which comprises a mechanism suited to vary the opening for the suction of steam from the inside of the cooking chamber by means of a wall that can be rotated with variable suction effect in the duct through which the cooling air passes.
  • Steam oven with ventilation of the outer walls of the cooking chamber equipped with a vacuum device with variable section between the cooking chamber and the ventilation duct, suited to extract the steam from the cooking chamber through a hole present in the upper wall of said cooking chamber.
  • Said variable system forms a wedge-shaped tunnel, arranged above and around said hole and suited to reduce the ventilation duct, or inversely suited to reduce said hole.
  • the figure 1 schematically represents a cross section of the new steam oven, in which it is possible to identify the cooking chamber (1) with the system for ventilation and steam extraction.
  • the cooking chamber (1) is equipped with a front access panel or door (1.1) and has an opening (1.2) on its upper wall (1.3).
  • the ventilation system comprises a fan (2.1) and a duct (2.2) or jacket around said cooking chamber (1).
  • said duct (2.2) laps and conveys the air blown by the fan (2.1) onto the upper wall (1.3) of the cooking chamber (1).
  • the wedge-shaped tunnel (3.1) (Fig. 2) is composed of two fixed walls in the shape of a right-angle triangle (3.1 a) parallel to each other and connected by a third rectangular mobile wall (3 .1 b) so as to form a hollow ramp shape whose inclined mobile wall (3.1 b) forms, in the ventilation duct (2.2), a first compression segment for the air blown in by the fan (2.1). Substantially, said wedge-shaped tunnel (3.1) gradually reduces the opening for the passage of the air blown in by the fan (2.1).
  • the wedge-shaped tunnel (3.1) has dimensions and positions such as to stand completely above the hole (1.2) in the upper wall (1.3) of the cooling chamber (1).
  • the mobile wall (3.1b) is hinged close to the edge of said hole (1.2) in said cooking chamber (1) so as to pass from a closed position of said hole (1.2) to an inclined position of maximum opening of the wedge-shaped tunnel (3.1).
  • said mobile wall (3.1b) modifying its inclination, gradually closes and opens the hole (1.2) in the cooking chamber (1).
  • a step-by-step motor (4) modifies and regulates the inclination of said mobile wall (3.1b), directly or by means of linkages (4.1).
  • the wedge-shaped tunnel (3.1) produces inside the ventilation duct (2.2) a vacuum effect, which acts in a variable way, depending on the position of the mobile wall (3.1 b), on the extraction of steam from the cooking chamber.
  • the new steam oven constituted as described above presents considerable advantages.
  • the extraction of steam from the cooking chamber (1) is variable and regulated by the mobile wall (3.1b), depending on the temperature and humidity measured by special sensors.

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Cookers (AREA)
  • Measurement Of The Respiration, Hearing Ability, Form, And Blood Characteristics Of Living Organisms (AREA)
  • Apparatus For Making Beverages (AREA)
  • Jet Pumps And Other Pumps (AREA)

Abstract

The invention is a new steam oven with ventilation of the outer walls of the cooking chamber (1), comprising a vacuum device with variable cross section between the cooking chamber (1) and the ventilation duct (2.2) suited to extract the steam from the cooking chamber (1) through a hole (1.2) present in the upper wall (1.3) of the cooking chamber (1). The device comprises a mobile wall (3.1b) suited to reduce the ventilation duct (2.2), hinged before said hole (1.2) and positioned above it. The inclination of the mobile wall (3.1b) varies from a completely lowered position, in which it closes said hole (1.2), to a maximum opening position, depending on the temperature and the humidity present inside the cooking chamber and depending on the ventilation speed in the duct (2.2).

Description

  • The present patent concerns electrical household appliances for the kitchen and in particular steam ovens.
  • Steam ovens are known in which water is vaporised and blown inside the oven.
  • These steam ovens comprise a tank for the water to be vaporised, a pump for lifting the water, a vaporiser.
  • A ventilation system extracts the steam from inside the cooking chamber so as to prevent saturation inside said cooking chamber.
  • Current ovens also comprise a ventilation system suited to cool the outer walls of the cooking chamber so that the heat is not transmitted to the outer walls of the oven or to the walls of the furniture unit that contains the oven.
  • The cooling ventilation system and the steam extraction system are integrated together so that the ventilation system also extracts the steam.
  • Steam ovens made in this way present various drawbacks and problems.
  • The ventilation system which extracts the steam from the cooking chamber and cools the outer walls of the cooking chamber involves no regulation, except for the fan rotation speed. In this way the extraction of steam from the cooking chamber and the ventilation of the outer walls of said cooking chamber are connected to each other.
  • Consequently, an excessive extraction of steam from the cooking chamber takes place to favour the cooling of the outer walls of the cooking chamber, or the extraction of less steam affects the heating of the outer walls of the cooking chamber.
  • Alternatively another solution is used, which is rather expensive and bulky, since it comprises two separate systems for ventilating the outer walls and extracting the steam.
  • To overcome all the above-mentioned drawbacks, a new steam oven has been studied and implemented, provided with a variable depression duct for extracting the steam.
  • The aim of the new oven is to modulate the extraction of steam from the cooking chamber while maintaining adequate ventilation of the outer walls of the cooking chamber itself.
  • Another aim of the new oven is to properly cool the outer walls of the cooking chamber and at the same time adequately extract the steam from the inside of said cooking chamber with a single ventilation system.
  • These and other aims, both direct and complementary, are achieved by the new steam oven, which comprises a mechanism suited to vary the opening for the suction of steam from the inside of the cooking chamber by means of a wall that can be rotated with variable suction effect in the duct through which the cooling air passes.
  • Steam oven with ventilation of the outer walls of the cooking chamber, equipped with a vacuum device with variable section between the cooking chamber and the ventilation duct, suited to extract the steam from the cooking chamber through a hole present in the upper wall of said cooking chamber. Said variable system forms a wedge-shaped tunnel, arranged above and around said hole and suited to reduce the ventilation duct, or inversely suited to reduce said hole.
  • The characteristics of the new steam oven with vacuum system for steam extraction will be explained in greater detail in the following description with reference to the enclosed drawings, which are attached by way of a non-restrictive example.
  • The figure 1 schematically represents a cross section of the new steam oven, in which it is possible to identify the cooking chamber (1) with the system for ventilation and steam extraction.
  • The cooking chamber (1) is equipped with a front access panel or door (1.1) and has an opening (1.2) on its upper wall (1.3).
  • The ventilation system comprises a fan (2.1) and a duct (2.2) or jacket around said cooking chamber (1).
  • In particular, said duct (2.2) laps and conveys the air blown by the fan (2.1) onto the upper wall (1.3) of the cooking chamber (1).
  • Inside said duct (2.2), above the hole (1.2) in the upper wall (1.3) of the cooking chamber (1) there is the wedge-shaped tunnel with a mobile wall (3.1).
  • The wedge-shaped tunnel (3.1) (Fig. 2) is composed of two fixed walls in the shape of a right-angle triangle (3.1 a) parallel to each other and connected by a third rectangular mobile wall (3 .1 b) so as to form a hollow ramp shape whose inclined mobile wall (3.1 b) forms, in the ventilation duct (2.2), a first compression segment for the air blown in by the fan (2.1). Substantially, said wedge-shaped tunnel (3.1) gradually reduces the opening for the passage of the air blown in by the fan (2.1).
  • The wedge-shaped tunnel (3.1) has dimensions and positions such as to stand completely above the hole (1.2) in the upper wall (1.3) of the cooling chamber (1).
  • The mobile wall (3.1b) is hinged close to the edge of said hole (1.2) in said cooking chamber (1) so as to pass from a closed position of said hole (1.2) to an inclined position of maximum opening of the wedge-shaped tunnel (3.1).
  • Substantially, said mobile wall (3.1b), modifying its inclination, gradually closes and opens the hole (1.2) in the cooking chamber (1).
  • A step-by-step motor (4), or other equivalent regulating mechanism, modifies and regulates the inclination of said mobile wall (3.1b), directly or by means of linkages (4.1).
  • The wedge-shaped tunnel (3.1) produces inside the ventilation duct (2.2) a vacuum effect, which acts in a variable way, depending on the position of the mobile wall (3.1 b), on the extraction of steam from the cooking chamber.
  • The new steam oven constituted as described above presents considerable advantages.
  • The extraction of steam from the cooking chamber (1) is variable and regulated by the mobile wall (3.1b), depending on the temperature and humidity measured by special sensors.
  • It is thus possible to use a single ventilation system (2.1, 2.2) which cools the outer walls of the cooking chamber (1) and takes away the steam. The speed and capacity of the ventilation system (2.1, 2.2) depend on the cooling effect needed by the outer walls of the cooking chamber (1), while steam extraction is regulated by said mobile wall (3 .1 b), depending on the capacity/ventilation of the ventilation system (2.1, 2.2) and on the temperature/humidity in the cooking chamber (1).

Claims (6)

  1. Steam oven with ventilation of the outer walls of the cooking chamber (1), characterised in that it comprises a vacuum device with variable cross section between the cooking chamber (1) and the ventilation duct (2.2), suited to extract the steam from the cooking chamber (1) through at least one hole (1.2) present in the upper wall (1.3) of said cooking chamber (1), and wherein said variable vacuum device comprises a mobile wall (3.1b), suited to reduce the ventilation duct (2.2), hinged before said hole (1.2) and positioned above it.
  2. Steam oven with ventilation of the outer walls of the cooking chamber (1) according to claim 1, characterised in that said vacuum device also comprises two substantially triangular fixed walls (3.1 a) parallel to each other, and wherein said mobile wall (3.1b) is located between said two triangular walls (3.1a) and hinged close to a vertex of said triangular walls (3.1a) so as to constitute a ramp whose inclined mobile wall (3.1b) forms, in the ventilation duct (2.2), an inclined compression segment for the air blown in by the fan (2.1).
  3. Steam oven with ventilation of the outer walls of the cooking chamber (1) according to claims 1, 2, characterised in that the inclination of the mobile wall (3.1b) varies from a completely lowered position, in which it closes said hole (1.2), to a maximum opening position corresponding to the upper edge of said triangular walls (3.1a).
  4. Steam oven with ventilation of the outer walls of the cooking chamber (1) according to the previous claims, characterised in that the mobile wall (3.1 b) is rotated by a step-by-step motor (4), or other equivalent regulating mechanism, depending on the temperature and the humidity present inside the cooking chamber and depending on the ventilation speed in the duct (2.2).
  5. Steam oven according to the previous claims, characterised in that it controls the steam contained in the cooking chamber (1) by varying the output section (1.2) obtained by means of the mobile wall (3.1b) of the wedge-shaped tunnel (3.1) located in the channel (2.2) through which the air that cools the outer walls of the oven passes, in such a way as to create a variable vacuum effect owing to their combination.
  6. Steam oven according to the previous claims, characterised in that the mobile wall (3.1b) is regulated by a step-by-step electric motor (4), and wherein the position of said mobile wall (3.1b) is controlled by an electronic card by means of a signal produced by temperature and humidity sensors which monitor the quantity of steam contained in the cooking chamber (1).
EP05425239A 2005-04-15 2005-04-15 Steam oven with variable vacuum duct for steam extraction Not-in-force EP1712845B1 (en)

Priority Applications (5)

Application Number Priority Date Filing Date Title
DE602005007469T DE602005007469D1 (en) 2005-04-15 2005-04-15 Steam oven with vacuum intake duct
PT05425239T PT1712845E (en) 2005-04-15 2005-04-15 Steam oven with variable vacuum duct for steam extraction
AT05425239T ATE398267T1 (en) 2005-04-15 2005-04-15 STEAM FURNACE WITH VACUUM INTAKE DUCT
EP05425239A EP1712845B1 (en) 2005-04-15 2005-04-15 Steam oven with variable vacuum duct for steam extraction
ES05425239T ES2308421T3 (en) 2005-04-15 2005-04-15 STEAM OVEN WITH VARIABLE VACUUM DUCT FOR STEAM EXTRACTION.

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP05425239A EP1712845B1 (en) 2005-04-15 2005-04-15 Steam oven with variable vacuum duct for steam extraction

Publications (2)

Publication Number Publication Date
EP1712845A1 true EP1712845A1 (en) 2006-10-18
EP1712845B1 EP1712845B1 (en) 2008-06-11

Family

ID=34943159

Family Applications (1)

Application Number Title Priority Date Filing Date
EP05425239A Not-in-force EP1712845B1 (en) 2005-04-15 2005-04-15 Steam oven with variable vacuum duct for steam extraction

Country Status (5)

Country Link
EP (1) EP1712845B1 (en)
AT (1) ATE398267T1 (en)
DE (1) DE602005007469D1 (en)
ES (1) ES2308421T3 (en)
PT (1) PT1712845E (en)

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1855058A1 (en) * 2006-08-24 2007-11-14 V-Zug AG Process and apparatus to cook dishes with vapour
DE102007059770A1 (en) * 2007-12-12 2009-06-18 BSH Bosch und Siemens Hausgeräte GmbH Cooking arrangement used in the home comprises a guiding region which connects an inlet opening with a mixing unit in a linear manner
EP2149757A2 (en) 2008-08-01 2010-02-03 Rational AG Cooking apparatus with a fluid conducting element
ES2337867A1 (en) * 2008-08-06 2010-04-29 Dobra Industrial, S.A. Oven for bread and pastries with dehumidifying device
WO2011080097A3 (en) * 2009-12-31 2011-09-29 Arcelik Anonim Sirketi Oven with a ventilating device
WO2012062864A1 (en) 2010-11-11 2012-05-18 Arcelik Anonim Sirketi An oven wherein the cooking time is shortened
WO2012084600A1 (en) * 2010-12-20 2012-06-28 BSH Bosch und Siemens Hausgeräte GmbH Cooking appliance having vapor extraction means
WO2013098251A1 (en) * 2011-12-30 2013-07-04 Arcelik Anonim Sirketi An oven comprising an exhaust duct
EP3428545A1 (en) * 2017-07-12 2019-01-16 Miele & Cie. KG Cooking device
DE102019205337A1 (en) * 2019-04-12 2020-10-15 Wilhelm Bruckbauer Device for heating food

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3587555A (en) * 1969-05-13 1971-06-28 Jenn Air Corp Ventilated range
EP0624759A1 (en) * 1993-05-11 1994-11-17 Compagnie Europeenne Pour L'equipement Menager "Cepem" Steam oven with a steam vent
FR2797682A1 (en) * 1999-08-20 2001-02-23 Aeg Hausgeraete Gmbh Steam and vapor evacuation system for domestic cooking oven has fan blowing vapor into pipe leading to exit, and external blower provides air stream moving air past oven inlet and vapor outlet
FR2817018A1 (en) * 2000-11-17 2002-05-24 Brandt Cooking Steam extractor for steam cooker has fresh air blower and steam outlet with at least one control

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3587555A (en) * 1969-05-13 1971-06-28 Jenn Air Corp Ventilated range
EP0624759A1 (en) * 1993-05-11 1994-11-17 Compagnie Europeenne Pour L'equipement Menager "Cepem" Steam oven with a steam vent
FR2797682A1 (en) * 1999-08-20 2001-02-23 Aeg Hausgeraete Gmbh Steam and vapor evacuation system for domestic cooking oven has fan blowing vapor into pipe leading to exit, and external blower provides air stream moving air past oven inlet and vapor outlet
FR2817018A1 (en) * 2000-11-17 2002-05-24 Brandt Cooking Steam extractor for steam cooker has fresh air blower and steam outlet with at least one control

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1855058A1 (en) * 2006-08-24 2007-11-14 V-Zug AG Process and apparatus to cook dishes with vapour
DE102007059770A1 (en) * 2007-12-12 2009-06-18 BSH Bosch und Siemens Hausgeräte GmbH Cooking arrangement used in the home comprises a guiding region which connects an inlet opening with a mixing unit in a linear manner
EP2149757A2 (en) 2008-08-01 2010-02-03 Rational AG Cooking apparatus with a fluid conducting element
ES2337867A1 (en) * 2008-08-06 2010-04-29 Dobra Industrial, S.A. Oven for bread and pastries with dehumidifying device
WO2011080097A3 (en) * 2009-12-31 2011-09-29 Arcelik Anonim Sirketi Oven with a ventilating device
WO2012062864A1 (en) 2010-11-11 2012-05-18 Arcelik Anonim Sirketi An oven wherein the cooking time is shortened
WO2012084600A1 (en) * 2010-12-20 2012-06-28 BSH Bosch und Siemens Hausgeräte GmbH Cooking appliance having vapor extraction means
WO2013098251A1 (en) * 2011-12-30 2013-07-04 Arcelik Anonim Sirketi An oven comprising an exhaust duct
EP3428545A1 (en) * 2017-07-12 2019-01-16 Miele & Cie. KG Cooking device
DE102019205337A1 (en) * 2019-04-12 2020-10-15 Wilhelm Bruckbauer Device for heating food

Also Published As

Publication number Publication date
PT1712845E (en) 2008-09-22
ATE398267T1 (en) 2008-07-15
EP1712845B1 (en) 2008-06-11
DE602005007469D1 (en) 2008-07-24
ES2308421T3 (en) 2008-12-01

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