EP3137816B1 - Oven with ventilation unit and heat protective shield - Google Patents

Oven with ventilation unit and heat protective shield Download PDF

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Publication number
EP3137816B1
EP3137816B1 EP14720159.4A EP14720159A EP3137816B1 EP 3137816 B1 EP3137816 B1 EP 3137816B1 EP 14720159 A EP14720159 A EP 14720159A EP 3137816 B1 EP3137816 B1 EP 3137816B1
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EP
European Patent Office
Prior art keywords
oven
ventilation unit
section
inlet
protective shield
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.)
Active
Application number
EP14720159.4A
Other languages
German (de)
French (fr)
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EP3137816A1 (en
Inventor
Servet TURGUT
Levent Oner
Hakan Sarier
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
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Arcelik AS
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Filing date
Publication date
Application filed by Arcelik AS filed Critical Arcelik AS
Publication of EP3137816A1 publication Critical patent/EP3137816A1/en
Application granted granted Critical
Publication of EP3137816B1 publication Critical patent/EP3137816B1/en
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Classifications

    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24HEATING; RANGES; VENTILATING
    • F24CDOMESTIC STOVES OR RANGES ; DETAILS OF DOMESTIC STOVES OR RANGES, OF GENERAL APPLICATION
    • F24C15/00Details
    • F24C15/006Arrangements for circulation of cooling air
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24HEATING; RANGES; VENTILATING
    • F24CDOMESTIC STOVES OR RANGES ; DETAILS OF DOMESTIC STOVES OR RANGES, OF GENERAL APPLICATION
    • F24C15/00Details
    • F24C15/08Foundations or supports plates; Legs or pillars; Casings; Wheels

Description

  • The present invention relates to an oven, in particular a domestic pyrolytic oven which has a ventilation unit for expelling radiant heat to an outside. In a conventional oven, during a cooking/baking process an inner lining of the cooking/baking chamber is generally spoiled with food residues. The cleaning of the hardened food residues is usually very laborious. In a conventional oven having a pyrolytic mode, the food residues are burned off by heating the chamber up to temperatures above 500 °C. In general, in a conventional pyrolytic oven the inner lining of the chamber has a smooth surface. Thereby, the food residues easily peel off during the pyrolysis. After the chamber has sufficiently cooled down, the user can easily collect the ashes from the bottom of the chamber. Thus, the pyrolytic mode greatly facilitates cleaning of the cooking/baking chamber.
    In the conventional pyrolytic oven the high temperatures prevailing inside the chamber during the pyrolytic mode poses a risk to the thermally sensitive component parts of the oven, in particular the electrical components which generally have a relatively low limit temperature. Also, the hot component parts of the oven which are exposed to an outside pose a severe risk to the health of the user. In particular these hot component parts can cause skin burns and scalding.
    US2010/0276412 A1 discloses a cooking range which has a controller with a pyrolytic mode. This cooking range has an air circulation mechanism which expels the heat to an environment in order to reduce an amount of heat transmitted to the controller.
  • US 4 601 279 discloses an oven comprising a heat protective shield which is arranged through an air gap above a ventilation unit. The heat protective shield has a size and shape configured to screen a user interface and electrical components from radiant heat emanated from hot air inside the ventilation unit and a chamber during operation. The heat protective shield comprises a mounting plate. The electrical components are attached onto an upper surface of the mounting plate which is averted from the ventilation unit.
  • EP 2 107 317 A2 discloses an oven with a dividing plate which reinforces an upper wall of an outer case of the oven from below. The dividing plate is connected to supporting portions which are fixed to an upper plate.
  • A problem with the conventional pyrolytic cooking range is that if the air circulation mechanism is shut off, or fails to operate, then the electrical parts such as the controller are excessively heated and get rapidly aged and eventually damaged. On the other hand, in case the air circulation mechanism is continually operated the overall energy consumption of the oven increases.
    An objective of the present invention is to provide an oven which
    overcomes the aforementioned drawbacks of the prior art in a cost-effective way and which enables an energy-efficient and effective ventilation of the critical component parts and a reliable protection of the electrical components from heat.
  • This objective has been achieved by the oven as defined in claim 1. Further achievements have been attained by the subject-matters respectively defined in the dependent claims.
  • The oven of the present invention comprises a heat protective shield which is arranged through an air gap above a ventilation unit which expels the radiant heat to an outside. The heat protective shield has a size and shape which is configured to screen the user interface and electrical components from the radiant heat emanated from the hot air inside the ventilation unit and the chamber during operation. The heat protective shield has a mounting plate. The electrical components are attached onto an upper surface of the mounting plate which is averted from ventilation unit.
  • The heat protective shield comprises a mounting bracket which is attached across the side walls so as to reinforce the entire ceiling of outer case from below.
  • In another embodiment, the heat protective shield comprises a throughlet for installing cables which lead to the electrical components.
  • The heat protective shield comprises a vertical partition plate which physically divides a region above the ventilation unit into two separate sub regions, namely a first sub region including the electrical components, and a second sub region which is close to the fan. Thereby, it is safeguarded that a temperature in the first sub region is always lower than the temperature in the second sub region during an operation of the oven.
  • In another embodiment, the ventilation unit has a duct and a fan inside the duct. The ventilation unit draws air from an interior of the door and from the chamber into the duct, and discharges the air inside the duct to the outside via an outlet formed underneath the control panel.
  • In another embodiment, the duct is partitioned into two sections one above the other. The lower section draws air from an interior of the door and from the chamber into the duct. The upper section discharges the air in the duct to the outside. The fan is arranged between the two sections.
  • With the heat protective shield of the present invention, the electrical components can be easily secured to their designated location and effectively protected from the radiant heat. The heat protective shield of the present invention can be easily mounted to its position by means of its mounting bracket. By the heat protective shield of the present invention the cables which lead to the electrical components can be easily installed by means of the throughlet. The heat protective shield of the present invention ensures by means of the partition plate that the sub region including the electrical components is relatively colder than the sub region close to the fan. The ventilation unit of the present invention ventilates the components parts exposed to an outside, in particular the door, and thus, protects the user from skin burns. By the ventilation unit of the present invention, the hot air and food residues are prevented from diffusing into a space between an outer case and an inner case even when the fan is shut off. Also by the stacked sections, the ventilation performance has been improved.
  • Additional advantages of the oven of the present invention will become apparent with the detailed description of the embodiments with reference to the accompanying drawings in which:
    • Figure 1 - is a schematic partial perspective front view of an oven which has a heat protective shield according to an embodiment of the present invention;
    • Figure 2 - is a schematic partial perspective rear view of the oven which has the heat protective shield according to an embodiment of the present invention;
    • Figure 3 - is a schematic partial side view of the oven which has the heat protective shield according to an embodiment of the present invention;
    • Figure 4 - is a schematic partial front view of the oven which has the heat protective shield according to an embodiment of the present invention;
    • Figure 5 - is a schematic partial sectional view of the oven shown in Fig. 4, taken along the line A-A;
    • Figure 6 - is a schematic perspective view of the heat protective shield according to an embodiment of the present invention;
    • Figure 7 - is a schematic top view of the heat protective shield according to an embodiment of the present invention;
    • Figure 8 - is a schematic side view of the heat protective shield according to an embodiment of the present invention.
  • The reference signs appearing on the drawings relate to the following technical features.
    • 1. Oven
    • 2. Inner case
    • 3. Chamber
    • 4. Outer case
    • 5. User interface
    • 6. Electrical components
    • 7. Control panel
    • 8. Ventilation unit
    • 9. Shield
    • 10. Air gap
    • 11. Mounting plate
    • 12. Mounting bracket
    • 13. Side wall
    • 14. Upper wall
    • 15. Throughlet
    • 16. Partition plate
    • 17. Region
    • 17a. 17b. Sub region
    • 18. Slot
    • 19. Supporting base
    • 20. Inner flange
    • 21. Duct
    • 21a. First section
    • 21b. Second section
    • 22. Fan
    • 23. First inlet
  • The oven (1) comprises an inner case (2) which defines a chamber (3) for cooking/baking food, a heater unit (not shown) which is arranged to heat the chamber (3), a door (not shown) for accessing the chamber (3), an outer case (4) which encloses the inner case (2), a user interface (5) and electrical components (6) for controlling the oven (1), a control panel (7) which is arranged above the door, wherein the user interface (5) is mounted to the control panel (7) and a ventilation unit (8) for expelling radiant heat to an outside, wherein the ventilation unit (8) is arranged inside the outer case (4) and on an upper side of the inner case (2) (Figs. 1 to 5).
  • The oven (1) of the present invention comprises a heat protective shield (9) which is arranged through an air gap (10) above the ventilation unit (8). The heat protective shield (9) has a size and shape which is configured to screen the user interface (5) and electrical components (6) from the radiant heat emanated from the hot air inside the ventilation unit (8) and the chamber (3) during operation. The heat protective shield (9) comprises a mounting plate (11). The electrical components (6) are attached onto an upper surface of the mounting plate (11) which is averted from ventilation unit (8) (Figs. 1 to 8).
  • The heat protective shield (9) comprises a mounting bracket (12) which is attached across the opposing side walls (13) of the outer case (4) so as to reinforce an upper wall (14) of the outer case (4) from below.
  • In another embodiment, the heat protective shield (9) comprises a cable throughlet (15) for the cables which lead to the electrical components (6).
  • In a version of this embodiment, the cable throughlet (15) is formed into the mounting bracket (12).
  • The mounting bracket (12) comprises a vertical partition plate (16) which physically divides a region (17) above the ventilation unit (8) into two sub regions (17a, 17b). The partition plate (16) extends perpendicular to the opposing side walls (13) of the outer case (4).
  • In a version of this embodiment, the partition plate (16) comprises a slot (18) which surrounds an upper side of the ventilation unit (8) in contactless manner and two opposing lateral sides of the ventilation unit (8).
  • In another embodiment, the heat protective shield (9) comprises a supporting base (19) which is abutted against an inner flange (20) of the outer case (4). The inner flange (20) is formed underneath the control panel (7).
  • In a version of this embodiment, the supporting base (19) and the mounting bracket (12) are formed on opposing ends of the mounting plate (11).
  • In another embodiment, the mounting plate (11) of the heat protective shield (9) is separated from the ventilation unit (8) by a predetermined distance in the height direction. The mounting plate (11) extends substantially parallel to an upper surface of the ventilation unit (8).
  • In another embodiment, the width of the mounting plate (11) matches of a width of the ventilation unit (8).
  • In another embodiment, the door has a hollow body, a lower aperture and an upper aperture which together allow ambient air to flow through the interior of the hollow body. In this embodiment, the ventilation unit (8) has a duct (21) and a fan (22) which is arranged inside the duct (21). The ventilation unit (8) is configured to draw air from the interior of the door via a first inlet (23) and from the chamber (3) via a second inlet (not shown) into the duct (21), and discharge the air inside the duct (21) to the outside via an outlet (24). The first inlet (23) faces the upper aperture. The second inlet opens into a ceiling of the chamber (3). The outlet (24) is underneath the control panel (7) and above the first inlet (23).
  • In another embodiment, the duct (21) is partitioned into a first section (21a) and a second section (21b). The second section (21b) is arranged above the first section (21a). The first section (21a) includes the first inlet (23) and the second inlet. The second section (21b) includes the outlet (24). The fan (22) is arranged between the first section (21a) and the second section (21b).
  • In another embodiment, a width of the first section (21a) narrows from the first inlet (23) towards the fan (22). A width of the second section (21b) widens from the fan (22) towards the outlet (24). A height of the first section (21a) increases from the first inlet (23) towards the fan (22). A height of the second section (21b) decreases from the fan (22) towards the outlet (24).
  • In another embodiment, the first inlet (23) comprises a plurality of slots which are arrayed in a width direction (L) of the door. The outlet (24) has at least one slot which extends parallel to the width direction (L).
  • In another embodiment, the oven (1) has a cooking/baking mode and a pyrolytic mode which are selectable by a user via the user interface (5).
  • In another embodiment, the heat protective shield (9) is made from a single metal plate.
  • With the heat protective shield (9) of the present invention, the electrical components (6) can be easily installed into the oven (1) and effectively protected from the radiant heat. The electrical components (6) can be prevented from early aging and overheating. With the ventilation unit (8) of the present invention a ventilation performance has been improved and the user has been protected from skin burns. In addition, with the ventilation unit (8), the hot air and food residues are prevented from diffusing into a space between an outer case (4) and an inner case (2) even when the fan is shut off. Thereby, the user interface (5) and the electrical components (6) are protected from moisture.

Claims (13)

  1. An oven (1) comprising
    - an inner case (2) which defines a chamber (3) for cooking/baking food,
    - a heater unit which is arranged to heat the chamber (3),
    - a door for accessing the chamber (3),
    - an outer case (4) which encloses the inner case (2),
    - a user interface (5) and electrical components (6) for controlling the oven (1),
    - a control panel (7) which is arranged above the door, wherein the user interface (5) is mounted to the control panel (7),
    - a ventilation unit (8) for expelling radiant heat to an outside, wherein the ventilation unit (8) is arranged inside the outer case (4) and on an upper side of the inner case (2),
    - a heat protective shield (9) which is arranged through an air gap (10) above the ventilation unit (8), wherein the heat protective shield (9) has a size and shape configured to screen the user interface (5) and electrical components (6) from the radiant heat emanated from the hot air inside the ventilation unit (8) and the chamber (3) during operation, wherein the heat protective shield (9) comprises a mounting plate (11) and wherein the electrical components (6) are attached onto an upper surface of the mounting plate (11) which is averted from ventilation unit (8), characterized in that the heat protective shield (9) further comprises a mounting bracket (12), wherein the mounting bracket (12) is attached across the opposing side walls (13) of the outer case (4) so as to reinforce an upper wall (14) of the outer case (4) from below, wherein the mounting bracket (12) comprises a vertical partition plate (16) which physically divides a region (17) above the ventilation unit (8) into two sub regions (17a, 17b), wherein the partition plate (16) extends perpendicular to the opposing side walls (13) of the outer case (4).
  2. The oven (1) according to claim 1, characterized in that the heat protective shield (9) comprises a cable throughlet (15) for the cables which lead to the electrical components (6).
  3. The oven (1) according to claim 2, characterized in that the cable throughlet (15) is formed into the mounting bracket (12).
  4. The oven (1) according to any of claims 1 to 3, characterized in that the partition plate (16) comprises a slot (18) which surrounds an upper side of the ventilation unit (8) in contactless manner and two opposing lateral sides of the ventilation unit (8).
  5. The oven (1) according to any one of claims 1 to 4, characterized in that the heat protective shield (9) comprises a supporting base (19), wherein the supporting base (19) is abutted against an inner flange (20) of the outer case (4) which is formed underneath the control panel (7).
  6. The oven (1) according to claim 5, characterized in that the supporting base (19) and the mounting bracket (12) are formed on opposing ends of the mounting plate (11).
  7. The oven (1) according to any one of claims 1 to 6, characterized in that the mounting plate (11) of the heat protective shield (9) is separated from the ventilation unit (8) by a predetermined distance in the height direction and extends substantially parallel to an upper surface of the ventilation unit (8).
  8. The oven (1) according to any one of claims 1 to 7, characterized in that the width of the mounting plate (11) matches of a width of the ventilation unit (8).
  9. The oven (1) according to any one of claims 1 to 8, characterized in that the door comprises a hollow body, a lower aperture and an upper aperture which together allow ambient air to flow through the interior of the hollow body and
    the ventilation unit (8) comprises a duct (21) and a fan (22) which is arranged inside the duct (21), the ventilation unit (8) being configured to draw air from the interior of the door via a first inlet (23) and from the chamber (3) via a second inlet into the duct (21), and discharge the air inside the duct (21) to the outside via an outlet (24), wherein the first inlet (23) faces the upper aperture, wherein the second inlet opens into a ceiling of the chamber (3), and wherein the outlet (24) is underneath the control panel (7) and above the first inlet (23).
  10. The oven (1) according to claim 9, characterized in that the duct (21) is partitioned into a first section (21a) and a second section (21b), wherein the second section (21b) is arranged above the first section (21a), wherein the first section (21a) includes the first inlet (23) and the second inlet, and wherein the second section (21b) includes the outlet (24), and wherein the fan (22) is arranged between the first section (21a) and the second section (21b).
  11. The oven (1) according to claim 10, characterized in that a width of the first section (21a) narrows from the first inlet (23) towards the fan (22) and a width of the second section (21b) widens from the fan (22) towards the outlet (24) and a height of the first section (21a) increases from the first inlet (23) towards the fan (22) and a height of the second section (21b) decreases from the fan (22) towards the outlet (24).
  12. The oven (1) according to any one of claims 9 to 11, characterized in that the first inlet (23) comprises a plurality of slots which are arrayed in a width direction (L) of the door and the outlet (24) has at least one slot extending parallel to the width direction (L).
  13. The oven (1) according to any one of claims 1 to 12, characterized by comprising a cooking/baking mode and a pyrolytic mode which are selectable by a user via the user interface (5).
EP14720159.4A 2014-04-30 2014-04-30 Oven with ventilation unit and heat protective shield Active EP3137816B1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/EP2014/058855 WO2015165530A1 (en) 2014-04-30 2014-04-30 Oven with ventilation unit and heat protective shield

Publications (2)

Publication Number Publication Date
EP3137816A1 EP3137816A1 (en) 2017-03-08
EP3137816B1 true EP3137816B1 (en) 2019-01-09

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ID=50624600

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Application Number Title Priority Date Filing Date
EP14720159.4A Active EP3137816B1 (en) 2014-04-30 2014-04-30 Oven with ventilation unit and heat protective shield

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EP (1) EP3137816B1 (en)
WO (1) WO2015165530A1 (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US11009235B2 (en) 2018-12-17 2021-05-18 Bsh Home Appliances Corporation Domestic kitchen appliance with sidewall cooling

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2107317A2 (en) * 2008-04-01 2009-10-07 LG Electronics Inc. Electric oven

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AT379884B (en) * 1979-08-03 1986-03-10 Nibelle Pierre Dkfm COOKER WITH AT LEAST ONE GAS COOKER
US4601279A (en) * 1984-07-10 1986-07-22 Societe De Dietrich Pyrolytic self-cleaning domestic oven with improved means for protecting electronic panel and controls from heat damages
KR100600102B1 (en) * 2003-12-17 2006-07-13 엘지전자 주식회사 Electric oven
FR2935780B1 (en) * 2008-09-09 2010-10-01 Fagorbrandt Sas INTEGRATED GAS COOKING OVEN

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2107317A2 (en) * 2008-04-01 2009-10-07 LG Electronics Inc. Electric oven

Also Published As

Publication number Publication date
WO2015165530A1 (en) 2015-11-05
EP3137816A1 (en) 2017-03-08

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