EP2333424A1 - A vented oven door for a domestic cooking oven - Google Patents

A vented oven door for a domestic cooking oven Download PDF

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Publication number
EP2333424A1
EP2333424A1 EP09015285A EP09015285A EP2333424A1 EP 2333424 A1 EP2333424 A1 EP 2333424A1 EP 09015285 A EP09015285 A EP 09015285A EP 09015285 A EP09015285 A EP 09015285A EP 2333424 A1 EP2333424 A1 EP 2333424A1
Authority
EP
European Patent Office
Prior art keywords
door
oven
channel
oven door
vented
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
EP09015285A
Other languages
German (de)
French (fr)
Other versions
EP2333424B1 (en
Inventor
Cedric Catalogne
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.)
Electrolux Home Products Corp NV
Original Assignee
Electrolux Home Products Corp NV
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 Electrolux Home Products Corp NV filed Critical Electrolux Home Products Corp NV
Priority to EP09015285.1A priority Critical patent/EP2333424B1/en
Priority to PCT/EP2010/007530 priority patent/WO2011069667A1/en
Publication of EP2333424A1 publication Critical patent/EP2333424A1/en
Application granted granted Critical
Publication of EP2333424B1 publication Critical patent/EP2333424B1/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24C—DOMESTIC STOVES OR RANGESĀ ; 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
    • F24—HEATING; RANGES; VENTILATING
    • F24C—DOMESTIC STOVES OR RANGESĀ ; DETAILS OF DOMESTIC STOVES OR RANGES, OF GENERAL APPLICATION
    • F24C15/00—Details
    • F24C15/02—Doors specially adapted for stoves or ranges
    • F24C15/04—Doors specially adapted for stoves or ranges with transparent panels

Definitions

  • the present invention relates to a vented oven door for a domestic cooking oven. Further, the present invention relates to a domestic cooking oven with a vented oven door according to the preamble of claim 7.
  • the vented oven door of the cooking oven allows low temperatures at the outer side of the oven door, so that there is no danger of being burnt for the user of the cooking oven.
  • the heat transfer from an inner glass panel being in contact with the oven cavity to an outer glass panel being in contact with the ambient is a combination of three different heat transfer modes. There is heat radiation from the surfaces of the inner glass panel, heat convection within the inner space of the oven door and heat conduction within the glasses of the glass panels.
  • a forced convection cools down the glass panels.
  • the cooling channel sucks cool air from the ambient through the inner space of the oven door.
  • the cooling channel may be arranged on the top wall of the oven cavity and the cool air streams upwards through the inner space of the oven door.
  • EP 1 972 855 A1 discloses a cooking oven with an air cooled oven door.
  • the oven door includes an inner and outer door channel.
  • the inner door channel is connected to the suction side of air moving means, so that an air flow rises through said inner door channel to a suction duct of the air moving means. Then the air stream is blown out by the air moving means, wherein said air stream passes an upper end of the outer door channel without passing through the outer door channel.
  • the hot surfaces of the glass panel being in direct with the oven cavity are cooled down, so that also the oven cavity is undesirably cooled down. This results in low cooking performances and high energy consumption.
  • the object of the present invention is achieved by the vented oven door for a domestic cooking oven according to claim 1.
  • the present invention relates to the vented oven door for the domestic cooking oven, wherein:
  • the main idea of the present invention is the forced heat convection in the outer door channel of the oven door on the one hand and the entrainment of the air stream from the inner door channel by the air stream from the cooling channel on the other hand. Additionally, the air stream from the inner door channel is driven by the natural heat convection flow due to the temperature gradient. This constellation allows an intensive cooling process in the outer portion of the oven door and prevents an intensive cooling down of the inner side of oven door, so that energy can be saved.
  • the oven door comprises a door cap defining at least one upper opening of the outer door channel.
  • the oven door may comprise a door cap defining at least one upper opening of the inner door channel.
  • the door cap is producible by low costs.
  • At least one of the door channels is aligned along a vertical direction. Further, at least one of the door channels may span nearly the complete width of the oven door. This contributes to an efficient cooling down.
  • the glass panels are arranged plane-parallel.
  • the glass panels may be slanted, so that the cross section of the door channels can vary.
  • the object of the present invention is further achieved by a domestic cooking oven according to claim 7.
  • the domestic cooking oven according to the present invention comprises a vented oven door and a cooling channel with air moving means, at least one suction and at least one exhaust, the cooking oven comprises at least one oven door as described above.
  • the cooling channel is arranged on a top wall of an oven cavity.
  • FIG 1 illustrates a schematic sectional side view of an upper portion of a vented oven door 10 for a domestic oven according to a preferred embodiment of the present invention.
  • the oven door 10 is a closed state.
  • the oven door 10 includes an outer glass panel 12, a central glass panel 14 and an inner glass panel 16.
  • the outer glass panel 12, the central glass panel 14 and the inner glass panel 16 are arranged plane-parallel to each other.
  • An outer door channel 18 is arranged between the outer glass panel 12 and the central glass panel 14.
  • an inner door channel 20 is arranged between the central glass panel 14 and the inner glass panel 16.
  • the outer door channel 18 and the inner door channel 20 are aligned along vertical directions within the oven door 10.
  • the outer door channel 18 and the inner door channel 20 span nearly the complete width of the oven door 10.
  • a door cap 22 is arranged on the upper side of the oven door 10.
  • the structure of the door cap 22 defines the upper openings of the outer door channel 18 and the inner door channel 20.
  • the upper opening of the outer door channel 18 is substantially directed to the inner side of the oven door 10.
  • the upper opening of the inner door channel 20 is directed to the outer side of the oven door 10 and to the ambient.
  • a cooling channel with air moving means is arranged on the top wall of the oven cavity.
  • a suction 24 and an exhaust 26 of the cooling channel are arranged above an opening of the oven cavity.
  • the suction 24 of the cooling channel is arranged besides the upper end of said oven door 10.
  • the exhaust 26 of the cooling channel is arranged above the upper end of the oven door 10 in the closed state of said oven door 10.
  • the suction 24 and the exhaust 26 of the cooling channel span nearly the complete width of the oven door 10.
  • the upper opening of the inner door channel 20 is connected to the ambient on the one hand and to the exhaust 26 of the cooling channel on the other in the closed state of the oven door 10.
  • This constellation results in an entrainment of the air from the inner door channel 20 by the air stream form the exhaust 26.
  • the air from the inner door channel 20 is entrained to the ambient.
  • FIG 2 illustrates the schematic sectional side view of the upper portion of the vented oven door 10 with pictured airstreams 28, 30 and 32 according to the preferred embodiment of the present invention.
  • FIG 2 clarifies the runs of the airstreams 28, 30 and 32 form the oven door 10 and in the cooling channel.
  • FIG 2 shows the same sectional side view of the upper portion of the oven door 10 as in FIG 1 .
  • An outer air stream 28 from the outer door channel 18 runs into the suction 24 of the cooling channel. Said outer air stream 28 is driven by the air moving means of the cooling channel, so that forced heat convection occurs in the outer door channel 18.
  • An inner air stream 30 from the inner door channel 20 runs into the ambient, wherein said inner air stream 30 is entrained by a cooling air stream 32 from the exhaust 26. Said cooling air stream 32 is driven by the air moving means of the cooling channel.
  • a simplified variation of the present invention would be an oven door without the outer door channel 18.
  • the oven door according to said variation includes only the central glass panel 14, the inner glass panel 16, the inner channel 20 and optionally the door cap 22.
  • the cooling effect will be obtained by the entrainment of the inner air stream 30 and by the natural convection flow in the inner channel 20.

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Electric Ovens (AREA)

Abstract

The present invention relates to a vented oven door for a domestic cooking. The oven door (10) comprises at least three glass panels (12, 14, 16). The inner space of the oven door (10) is subdivided into at least two door channels (18, 20) by the at least three glass panels (12, 14, 16). At least one upper opening of at least one outer door channel (18) is connected or connectable to a suction (24) of a cooling channel with air moving means in a closed state of the oven door (10). At least one upper opening of at least one inner door channel (20) is connected or connectable to the ambient on the one hand and an exhaust (26) of the cooling channel on the other hand in the closed state of the oven door (10), so that air from the inner door channel (20) is entrained by the air from the exhaust (26). Further, the present invention relates to a corresponding cooking oven.

Description

  • The present invention relates to a vented oven door for a domestic cooking oven. Further, the present invention relates to a domestic cooking oven with a vented oven door according to the preamble of claim 7.
  • The vented oven door of the cooking oven allows low temperatures at the outer side of the oven door, so that there is no danger of being burnt for the user of the cooking oven. The heat transfer from an inner glass panel being in contact with the oven cavity to an outer glass panel being in contact with the ambient is a combination of three different heat transfer modes. There is heat radiation from the surfaces of the inner glass panel, heat convection within the inner space of the oven door and heat conduction within the glasses of the glass panels.
  • When a door channel inside the oven door is connected to a cooling channel, then a forced convection cools down the glass panels. The cooling channel sucks cool air from the ambient through the inner space of the oven door. For example, the cooling channel may be arranged on the top wall of the oven cavity and the cool air streams upwards through the inner space of the oven door.
  • EP 1 972 855 A1 discloses a cooking oven with an air cooled oven door. The oven door includes an inner and outer door channel. The inner door channel is connected to the suction side of air moving means, so that an air flow rises through said inner door channel to a suction duct of the air moving means. Then the air stream is blown out by the air moving means, wherein said air stream passes an upper end of the outer door channel without passing through the outer door channel.
  • However, the hot surfaces of the glass panel being in direct with the oven cavity are cooled down, so that also the oven cavity is undesirably cooled down. This results in low cooking performances and high energy consumption.
  • It is an object of the present invention to provide an improved vented oven door for a domestic cooking oven, which allows an efficient cooling down of the oven door and prevent high energy consumption.
  • The object of the present invention is achieved by the vented oven door for a domestic cooking oven according to claim 1.
  • The present invention relates to the vented oven door for the domestic cooking oven, wherein:
    • the oven door comprises at least three glass panels,
    • the inner space of the oven door is subdivided into at least two door channels by the at least three glass panels,
    • at least one upper opening of at least one outer door channel is connected or connectable to a suction of a cooling channel with air moving means in a closed state of the oven door, and
    • at least one upper opening of at least one inner door channel is connected or connectable to the ambient on the one hand and an exhaust of the cooling channel on the other hand in the closed state of the oven door, so that air from the inner door channel is entrained by the air from the exhaust.
  • The main idea of the present invention is the forced heat convection in the outer door channel of the oven door on the one hand and the entrainment of the air stream from the inner door channel by the air stream from the cooling channel on the other hand. Additionally, the air stream from the inner door channel is driven by the natural heat convection flow due to the temperature gradient. This constellation allows an intensive cooling process in the outer portion of the oven door and prevents an intensive cooling down of the inner side of oven door, so that energy can be saved.
  • According to a preferred embodiment of the present invention the oven door comprises a door cap defining at least one upper opening of the outer door channel. In a similar way, the oven door may comprise a door cap defining at least one upper opening of the inner door channel. The door cap is producible by low costs.
  • Preferably, at least one of the door channels is aligned along a vertical direction. Further, at least one of the door channels may span nearly the complete width of the oven door. This contributes to an efficient cooling down.
  • For example, the glass panels are arranged plane-parallel. Alternatively, the glass panels may be slanted, so that the cross section of the door channels can vary.
  • The object of the present invention is further achieved by a domestic cooking oven according to claim 7.
  • The domestic cooking oven according to the present invention comprises a vented oven door and a cooling channel with air moving means, at least one suction and at least one exhaust, the cooking oven comprises at least one oven door as described above.
  • Preferably, the cooling channel is arranged on a top wall of an oven cavity.
  • Novel and inventive features of the present invention are set forth in the appended claims.
  • The present invention will be described in further detail with reference to the drawings, in which
    • FIG 1
    illustrates a schematic sectional side view of an upper portion of a vented oven door for a domestic oven according to a preferred embodiment of the present invention, and
    FIG 2
    illustrates the schematic sectional side view of the upper portion of the vented oven door with pictured air-streams according to the preferred embodiment of the present invention.
  • FIG 1 illustrates a schematic sectional side view of an upper portion of a vented oven door 10 for a domestic oven according to a preferred embodiment of the present invention. In FIG 1 the oven door 10 is a closed state.
  • The oven door 10 includes an outer glass panel 12, a central glass panel 14 and an inner glass panel 16. In this example, the outer glass panel 12, the central glass panel 14 and the inner glass panel 16 are arranged plane-parallel to each other. An outer door channel 18 is arranged between the outer glass panel 12 and the central glass panel 14. In a similar way, an inner door channel 20 is arranged between the central glass panel 14 and the inner glass panel 16. The outer door channel 18 and the inner door channel 20 are aligned along vertical directions within the oven door 10. Preferably, the outer door channel 18 and the inner door channel 20 span nearly the complete width of the oven door 10.
  • A door cap 22 is arranged on the upper side of the oven door 10. The structure of the door cap 22 defines the upper openings of the outer door channel 18 and the inner door channel 20. The upper opening of the outer door channel 18 is substantially directed to the inner side of the oven door 10. In contrast, the upper opening of the inner door channel 20 is directed to the outer side of the oven door 10 and to the ambient.
  • A cooling channel with air moving means is arranged on the top wall of the oven cavity. A suction 24 and an exhaust 26 of the cooling channel are arranged above an opening of the oven cavity. In the closed state of the oven door 10 the suction 24 of the cooling channel is arranged besides the upper end of said oven door 10. Further, the exhaust 26 of the cooling channel is arranged above the upper end of the oven door 10 in the closed state of said oven door 10. Preferably, the suction 24 and the exhaust 26 of the cooling channel span nearly the complete width of the oven door 10.
  • In the closed state of the oven door 10 the upper opening of the outer door channel 18 is connected to the suction 24 of the cooling channel. This structure results in forced heat convection. Air from the ambient is sucked by the air moving means upwards through the outer door channel 18, so that in particular an outer portion of the oven door is cooled down.
  • In contrast, the upper opening of the inner door channel 20 is connected to the ambient on the one hand and to the exhaust 26 of the cooling channel on the other in the closed state of the oven door 10. This constellation results in an entrainment of the air from the inner door channel 20 by the air stream form the exhaust 26. Thus, the air from the inner door channel 20 is entrained to the ambient.
  • The more intensive heat convection occurs in the outer door channel 18 than in the inner door channel 20. This allows an efficient cooling down of the oven door 10 on the one hand and prevents an intensive cooling down of the inner side of the oven door 10.
  • FIG 2 illustrates the schematic sectional side view of the upper portion of the vented oven door 10 with pictured airstreams 28, 30 and 32 according to the preferred embodiment of the present invention. FIG 2 clarifies the runs of the airstreams 28, 30 and 32 form the oven door 10 and in the cooling channel. FIG 2 shows the same sectional side view of the upper portion of the oven door 10 as in FIG 1.
  • An outer air stream 28 from the outer door channel 18 runs into the suction 24 of the cooling channel. Said outer air stream 28 is driven by the air moving means of the cooling channel, so that forced heat convection occurs in the outer door channel 18.
  • An inner air stream 30 from the inner door channel 20 runs into the ambient, wherein said inner air stream 30 is entrained by a cooling air stream 32 from the exhaust 26. Said cooling air stream 32 is driven by the air moving means of the cooling channel.
  • In this constellation more heat convection occurs in the outer door channel 18 than in the inner door channel 20. This allows the efficient cooling down of the oven door 10 on the one hand and prevents the intensive cooling down of the inner side of oven door 10.
  • A simplified variation of the present invention would be an oven door without the outer door channel 18. The oven door according to said variation includes only the central glass panel 14, the inner glass panel 16, the inner channel 20 and optionally the door cap 22. The cooling effect will be obtained by the entrainment of the inner air stream 30 and by the natural convection flow in the inner channel 20.
  • Although illustrative embodiments of the present invention have been described herein with reference to the accompanying drawings, it is to be understood that the present invention is not limited to that precise embodiment, and that various other changes and modifications may be affected therein by one skilled in the art without departing from the scope or spirit of the invention. All such changes and modifications are intended to be included within the scope of the invention as defined by the appended claims.
    • List of reference numerals
    • 10
    oven door
    12
    outer glass panel
    14
    central glass panel
    16
    inner glass panel
    18
    outer door channel
    20
    inner door channel
    22
    door cap
    24
    suction
    26
    exhaust
    28
    outer air stream
    30
    inner air stream
    32
    cooling air stream

Claims (8)

  1. A vented oven door for a domestic cooking oven, wherein:
    - the oven door (10) comprises at least three glass panels (12, 14, 16),
    - the inner space of the oven door (10) is subdivided into at least two door channels (18, 20) by the at least three glass panels (12, 14, 16),
    - at least one upper opening of at least one outer door channel (18) is connected or connectable to a suction (24) of a cooling channel with air moving means in a closed state of the oven door (10), and
    - at least one upper opening of at least one inner door channel (20) is connected or connectable to the ambient on the one hand and an exhaust (26) of the cooling channel on the other hand in the closed state of the oven door (10), so that air from the inner door channel (20) is entrained by the air from the exhaust (26).
  2. The vented oven door according to claim 1,
    characterized in, that
    the oven door (10) comprises a door cap (22) defining at least one upper opening of the outer door channel (18).
  3. The vented oven door according to claim 1 or 2,
    characterized in, that
    the oven door (10) comprises a door cap (22) defining at least one upper opening of the inner door channel (20).
  4. The vented oven door according to any one of the preceding claims,
    characterized in, that
    at least one of the door channels (18, 20) is aligned along a vertical direction.
  5. The vented oven door according to any one of the preceding claims,
    characterized in, that
    at least one of the door channels (18, 20) span nearly the complete width of the oven door (10).
  6. The vented oven door according to any one of the preceding claims,
    characterized in, that
    the glass panels (12, 14, 16) are arranged plane-parallel.
  7. A domestic cooking oven comprising a vented oven door and a cooling channel with air moving means, at least one suction (24) and at least one exhaust (26),
    characterized in, that
    the cooking oven comprises at least one oven door (10) according to any one of the claims 1 to 6.
  8. The domestic cooking oven according to claim 7,
    characterized in, that
    the cooling channel is arranged on a top wall of an oven cavity.
EP09015285.1A 2009-12-10 2009-12-10 A vented oven door for a domestic cooking oven Active EP2333424B1 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
EP09015285.1A EP2333424B1 (en) 2009-12-10 2009-12-10 A vented oven door for a domestic cooking oven
PCT/EP2010/007530 WO2011069667A1 (en) 2009-12-10 2010-12-10 A vented oven door for a domestic cooking oven

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP09015285.1A EP2333424B1 (en) 2009-12-10 2009-12-10 A vented oven door for a domestic cooking oven

Publications (2)

Publication Number Publication Date
EP2333424A1 true EP2333424A1 (en) 2011-06-15
EP2333424B1 EP2333424B1 (en) 2018-09-05

Family

ID=42342568

Family Applications (1)

Application Number Title Priority Date Filing Date
EP09015285.1A Active EP2333424B1 (en) 2009-12-10 2009-12-10 A vented oven door for a domestic cooking oven

Country Status (2)

Country Link
EP (1) EP2333424B1 (en)
WO (1) WO2011069667A1 (en)

Cited By (2)

* Cited by examiner, ā€  Cited by third party
Publication number Priority date Publication date Assignee Title
EP2899468A1 (en) * 2014-01-27 2015-07-29 BSH HausgerƤte GmbH Cooking device with an air channel and a supply channel
EP3333490A1 (en) * 2016-12-07 2018-06-13 Electrolux Appliances Aktiebolag Cooling system for an oven door of a cooking oven

Families Citing this family (1)

* Cited by examiner, ā€  Cited by third party
Publication number Priority date Publication date Assignee Title
CN111096685B (en) * 2018-10-25 2022-07-26 å®ę³¢ę–¹å¤ŖåŽØå…·ęœ‰é™å…¬åø Embedded oven

Citations (4)

* Cited by examiner, ā€  Cited by third party
Publication number Priority date Publication date Assignee Title
US5918589A (en) * 1996-05-10 1999-07-06 Whirlpool Corporation Low moisture/closed door broil oven ventilation system
EP0964208A1 (en) * 1998-06-09 1999-12-15 Compagnie Europeenne Pour L'equipement Menager "Cepem" Cooled cooking oven door
EP1726883A2 (en) * 2005-05-26 2006-11-29 Brandt Industries SAS Ventilation of an oven door
EP1731843A2 (en) * 2005-06-10 2006-12-13 Samsung Electronics Co., Ltd. Oven

Family Cites Families (3)

* Cited by examiner, ā€  Cited by third party
Publication number Priority date Publication date Assignee Title
JP2720522B2 (en) * 1989-06-09 1998-03-04 ę¾äø‹é›»å™Øē”£ę„­ę Ŗ式会ē¤¾ Heating equipment
DE10307086A1 (en) * 2003-02-19 2004-09-09 Electrolux Home Products Corporation N.V. Cooking oven
EP1972855B1 (en) 2007-03-22 2013-08-14 Franke Technology and Trademark Ltd Kitchen oven with air-cooled closing door

Patent Citations (4)

* Cited by examiner, ā€  Cited by third party
Publication number Priority date Publication date Assignee Title
US5918589A (en) * 1996-05-10 1999-07-06 Whirlpool Corporation Low moisture/closed door broil oven ventilation system
EP0964208A1 (en) * 1998-06-09 1999-12-15 Compagnie Europeenne Pour L'equipement Menager "Cepem" Cooled cooking oven door
EP1726883A2 (en) * 2005-05-26 2006-11-29 Brandt Industries SAS Ventilation of an oven door
EP1731843A2 (en) * 2005-06-10 2006-12-13 Samsung Electronics Co., Ltd. Oven

Cited By (4)

* Cited by examiner, ā€  Cited by third party
Publication number Priority date Publication date Assignee Title
EP2899468A1 (en) * 2014-01-27 2015-07-29 BSH HausgerƤte GmbH Cooking device with an air channel and a supply channel
EP3333490A1 (en) * 2016-12-07 2018-06-13 Electrolux Appliances Aktiebolag Cooling system for an oven door of a cooking oven
WO2018104000A1 (en) * 2016-12-07 2018-06-14 Electrolux Appliances Aktiebolag Cooling system for an oven door of a cooking oven
CN109937329A (en) * 2016-12-07 2019-06-25 ä¼ŠčŽ±å…‹ę–Æ家ē”Øē”µå™Øč‚”ä»½å…¬åø The cooling system of oven door for cooking oven

Also Published As

Publication number Publication date
WO2011069667A1 (en) 2011-06-16
EP2333424B1 (en) 2018-09-05

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