EP2693125A1 - Kochfeld mit Dichtungselement - Google Patents

Kochfeld mit Dichtungselement Download PDF

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Publication number
EP2693125A1
EP2693125A1 EP13176830.1A EP13176830A EP2693125A1 EP 2693125 A1 EP2693125 A1 EP 2693125A1 EP 13176830 A EP13176830 A EP 13176830A EP 2693125 A1 EP2693125 A1 EP 2693125A1
Authority
EP
European Patent Office
Prior art keywords
hob
burner
tray
sealing element
sealing
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.)
Withdrawn
Application number
EP13176830.1A
Other languages
English (en)
French (fr)
Inventor
Emrah Atabay
Serdar Kenar
Yusuf Kocaman
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.)
BSH Hausgeraete GmbH
Original Assignee
BSH Bosch und Siemens Hausgeraete GmbH
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 BSH Bosch und Siemens Hausgeraete GmbH filed Critical BSH Bosch und Siemens Hausgeraete GmbH
Publication of EP2693125A1 publication Critical patent/EP2693125A1/de
Withdrawn legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23D—BURNERS
    • F23D14/00—Burners for combustion of a gas, e.g. of a gas stored under pressure as a liquid
    • F23D14/46—Details, e.g. noise reduction means
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23D—BURNERS
    • F23D14/00—Burners for combustion of a gas, e.g. of a gas stored under pressure as a liquid
    • F23D14/02—Premix gas burners, i.e. in which gaseous fuel is mixed with combustion air upstream of the combustion zone
    • F23D14/04—Premix gas burners, i.e. in which gaseous fuel is mixed with combustion air upstream of the combustion zone induction type, e.g. Bunsen burner
    • F23D14/06—Premix gas burners, i.e. in which gaseous fuel is mixed with combustion air upstream of the combustion zone induction type, e.g. Bunsen burner with radial outlets at the burner head
    • 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
    • F24C3/00—Stoves or ranges for gaseous fuels
    • F24C3/08—Arrangement or mounting of burners
    • F24C3/085—Arrangement or mounting of burners on ranges
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23D—BURNERS
    • F23D2900/00—Special features of, or arrangements for burners using fluid fuels or solid fuels suspended in a carrier gas
    • F23D2900/14—Special features of gas burners
    • F23D2900/14001—Sealing or support of burner plate borders

Definitions

  • the invention concerns a hob which comprises a hob tray with a burner opening and a seal element located between the burner accessed through the burner opening and the hob tray.
  • the heads of gas burners in the state of the art are positioned so that they pass through burner openings created in a hob tray or are at least accessible through the opening.
  • a gas distributor which ensures the distribution of gas and the mixing of the gas and air, and also the cap.
  • a sealing element is positioned between the burner and the hob tray.
  • the gas distributor and the burner are usually brought together by a connecting element (a screw etc).
  • a connecting element a screw etc.
  • the seal element is compressed between the hob tray and the burner in order to ensure a seal.
  • screw holes can cause enamel cracking. The cracks tend to grow over time, causing undesirable visual defects in the hob tray.
  • connection elements such as screws are not used.
  • the hob referred to in document JP10153305 A is an example of a configuration without screws.
  • the ends of the flange include a section with a difference in level.
  • a sealing element is positioned in the edge of this section upon which the hob tray is positioned.
  • the hob tray is positioned on the sealing element which also constitutes the periphery of the burner opening.
  • a flexible section around the sealing element is folded to form a reverse C form folded toward the burner.
  • the external periphery of the flexible section of the sealing element may form ripples because it forms a smaller circle when folded. As a result of the rippled edge, it fails to provide full contact with the hob tray and a full seal.
  • the invention is inspired by the situation currently encountered and the aim is to overcome the deficiencies described above.
  • the purpose of the invention is to ensure a complete seal in order to prevent water passing into the underside of the hob tray.
  • the invention intended to achieve the purpose referred to is a hob which includes a hob tray, a burner opening provided in the hob tray; a burner positioned under the hob tray so that it can be accessed through the burner opening; a flange provided on the burner below the hob tray; a sealing element placed around the burner and located between the flange and the hob tray, with a circumferential sealing projection which firmly positions the sealing element on the flange by reason of the weight of the hob tray bearing upon it.
  • full contact and a full seal is provided between the sealing element and the hob tray without using a screw or other connecting element.
  • the sealing projection in a preferred embodiment of the invention, there is a seal area on the sealing projection which is defined by the upper periphery and the inner lower periphery which contacts the underside of the hob tray in a manner which provides a seal and also supports the hob tray. Contact with the underside of the hob tray is thus provided at all times throughout the entire circumference of the sealing extension.
  • the sealing projection has a shape which provides an acute angle between the underside of the hob tray and the seal area.
  • the sealing projection may have a shape which is an inverted U form in section, or a Z form in section which extends away from the burner, at an obtuse angle, or a straight form which extends away from the burner at an obtuse angle.
  • the sealing projection continually receives the force imposed by reason of the weight of the hob tray in the direction from the centre of the sealing element toward the outside.
  • it does not transition from a resting volume to a form with a smaller volume, it does not cause problems such a buckling or rippling, and is in contact with the hob tray at all times. In this way it provides a seal.
  • the sealing projection in the straight section form, has a shape which, in section, becomes thicker toward the junction point. This ensures that the sealing projection is continually trying to attain its former position under the force applied in the opposite direction to the center of the sealing element. This ensures that continuous contact with the hob tray is maintained. The thickening ensures that the force applied by the sealing projection against the hob tray will be more long-lasting. This will ensure that the sealing element has a long service life.
  • the sealing element includes an aperture, in a sealed position, for items such as the burner igniter or the flame control element.
  • the sealing element includes an elastic material. In this way, any variations in the shape or gap in the hob tray and/or burner will be compensated for. Because such variations are compensated for, a persistent seal is ensured.
  • the fact that the sealing projection is made of flexible material ensures that the sealing projection tries to retain its shape despite the force imposed by the hob tray. This ensures that continuous contact with the hob tray is maintained despite any such variations.
  • the sealing element includes heat-resistant material. This will ensure that the sealing element has a long service life in hobs which operate at high temperatures.
  • the invention concerns a hob (10) ( Figure-1) which includes a hob tray (12), a burner opening (16) provided in the hob tray (12); a burner (20) positioned under the hob tray (12) so that it can be accessed through the burner opening (16); a flange (22) provided on the burner (20) below the hob tray (12); a circumferential sealing element (30) positioned around the burner (20) between the flange (22) and the hob tray (12).
  • the sealing element (30) includes a circumferential sealing projection (40) which serves to settle the sealing element (30) onto the flange (22) with the weight of the hob tray (12) ( Figure-2).
  • the hob (10) used in the invention is preferably a gas hob which may be separate or attached to a cooker. It is equipped with one or more cooking sections. In each cooking section there is one burner (20) which may be of a variety of sizes. The burner (20) rests on support points provided on a hob under the tray located under the hob tray (12) and the connection pipes are connected to the gas supply. The support points prevent the burner (20) from moving downwards in a vertical direction when a load is imposed upon it.
  • the hob tray (12) is positioned on the burners (20).
  • the hob tray (12) is fixed to the side walls of the hob (11) at its own periphery or on the side walls of the domestic appliance such as a cooker. For this reason the burner (20) and the hob tray (12) are separate from each other.
  • the sealing element (30) is roughly hoop-shaped, as in the state of the art.
  • a burner head (24) is located in the burner void (32).
  • the sealing element (30) is located on a flange (22) which is a disk surrounding the burner head (24).
  • the flange (22) and the sealing element (30) are located under the hob tray (12).
  • the inner wall (33) of the burner hole comes into contact with the burner head (24) to form a seal.
  • the sealing element (30) is positioned on the burner (20) before the hob tray (12) is fixed. Since the igniter and flame control elements pass through in an area within the perimeter of the sealing element (30), there are one or more apertures (34).
  • the side of the sealing element (30) which faces the flange (22) also contains a centering lip (38) which passes round the entirety of the burner hole (32).
  • the centering lip (38) is preferably on the periphery of the burner hole (32) and projects downward toward the flange (22). It is preferably at an angle of 90 degrees to the underside of the flange (22).
  • a centering recess (23) on the burner flange (22) into which the centering lip (38) fits is preferably located at the point where the burner head (24) and the flange (22) meet.
  • the sealing projection (40) preferably extends towards the hob tray (12) from the upper surface (36) of the sealing element (30) which faces the hob tray (12).
  • the sealing projection (40) forms a boundary which includes the burner hole (32) and the apertures (34) ( Figure-4).
  • a preferred embodiment of the sealing projection (40) is straight in section. However, it does not extend toward the hob tray (12) at a right angle.
  • the straight section sealing projection (40) extends away from the burner (20) forming an obtuse angle (B) with the upper surface (36) of the sealing element.
  • the obtuse angle (B) can be at any angle, preferably between 90 and 180 degrees.
  • the obtuse angle (B) in its preferred embodiment is between 90 and 135 degrees.
  • the sealing projection (40) becomes to a certain extent thicker toward the point at which it meets the upper surface of the sealing element (30) ( Figure-4).As a consequence of the thicker lower part, the sealing projection (40) is able to stand at the angle referred to above when no force is applied to it. Also, when force is applied to it, it provides a counterforce in the opposite direction to the applied force.
  • the seal area (46) is preferably defined by the upper periphery (42) and the lower periphery (44) of the sealing projection (40). That is, the surface lying between the two peripheries (42, 44), taking in the points formed by the upper periphery (42) of the sealing projection (40) and its inner lower periphery (44), constitutes the seal area (46). Depending on the load applied to it, the whole of the seal area (46) or part of it will be in contact with the hob tray (12).
  • the sealing projection (40) is inclined, and therefore when a load is applied to it by the hob tray (12), it bends in the direction in which it is inclined, depending on the intensity of the load applied ( Figure-3).
  • A an acute angle between the underside (14) of the hob tray (12) and the seal area (46). If the burner (20) and the hob tray (12) are not parallel with one another, the sealing projection (40) will be deflected less in one area, and more in another area. But it will maintain its contact with the hob tray (12) at all times. This provides a seal.
  • the cross section of the sealing projection (40) forms an inverted U ( Figure-4a).
  • the arms of the U shape spread out towards their junction point with the sealing element (30).
  • a wall extending at an obtuse angle (B) is provided pointing away from the burner (20).
  • This wall creates an acute angle (A) with the underside of the hob tray (12) in order to create the seal area (46) which has been mentioned.
  • the sealing projection (40), in section, forms a zigzag.
  • the zigzag configuration comprises three arms roughly in a Z shape ( Figure-4b).
  • the arm which forms the free end of the Z shape has an obtuse angle pointing away from the burner (20).
  • a wall extending at an obtuse angle (B) is provided pointing away from the burner (20). This wall also creates an acute angle with the underside of the hob tray (12) in order to create the seal area (46) which has been mentioned.
  • the sealing projection (40) has an upper periphery (42) and an inner lower periphery (44).
  • the sealing element (30) includes flexible and/or heat-resistant material.
  • the sealing element (30) includes silicone.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Gas Burners (AREA)
EP13176830.1A 2012-07-30 2013-07-17 Kochfeld mit Dichtungselement Withdrawn EP2693125A1 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
TR201208851 2012-07-30

Publications (1)

Publication Number Publication Date
EP2693125A1 true EP2693125A1 (de) 2014-02-05

Family

ID=48793085

Family Applications (1)

Application Number Title Priority Date Filing Date
EP13176830.1A Withdrawn EP2693125A1 (de) 2012-07-30 2013-07-17 Kochfeld mit Dichtungselement

Country Status (1)

Country Link
EP (1) EP2693125A1 (de)

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH10153305A (ja) 1996-11-21 1998-06-09 Harman Co Ltd ガスコンロ
JPH10185119A (ja) * 1996-12-20 1998-07-14 Harman Co Ltd ガスコンロ
EP0994301A1 (de) * 1998-10-16 2000-04-19 Brandt Cooking Befestigungsanordnung für einen Gasbrenner
US20030140918A1 (en) * 2002-01-28 2003-07-31 Martin Taplan Kitchen gas cooking stove with a glass-ceramic, glass, or ceramic top, a gas cooktop with a glass-ceramic, glass, or ceramic top, and a glass-ceramic, glass, or ceramic top of a cooking stove or cooktop with a venting structure thereon

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH10153305A (ja) 1996-11-21 1998-06-09 Harman Co Ltd ガスコンロ
JPH10185119A (ja) * 1996-12-20 1998-07-14 Harman Co Ltd ガスコンロ
EP0994301A1 (de) * 1998-10-16 2000-04-19 Brandt Cooking Befestigungsanordnung für einen Gasbrenner
US20030140918A1 (en) * 2002-01-28 2003-07-31 Martin Taplan Kitchen gas cooking stove with a glass-ceramic, glass, or ceramic top, a gas cooktop with a glass-ceramic, glass, or ceramic top, and a glass-ceramic, glass, or ceramic top of a cooking stove or cooktop with a venting structure thereon

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