EP2607789A2 - Plaque de cuisson, en particulier pour usage domestique - Google Patents

Plaque de cuisson, en particulier pour usage domestique Download PDF

Info

Publication number
EP2607789A2
EP2607789A2 EP12199216.8A EP12199216A EP2607789A2 EP 2607789 A2 EP2607789 A2 EP 2607789A2 EP 12199216 A EP12199216 A EP 12199216A EP 2607789 A2 EP2607789 A2 EP 2607789A2
Authority
EP
European Patent Office
Prior art keywords
burner
cooking top
gasket
heat shielding
shielding element
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
EP12199216.8A
Other languages
German (de)
English (en)
Other versions
EP2607789A3 (fr
EP2607789B1 (fr
Inventor
Silvio Corrias
Sonia RICCIONI
Roberto Traferro
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.)
Whirlpool EMEA SpA
Original Assignee
Indesit Co SpA
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
Priority claimed from IT001190A external-priority patent/ITTO20111190A1/it
Priority claimed from IT001191A external-priority patent/ITTO20111191A1/it
Application filed by Indesit Co SpA filed Critical Indesit Co SpA
Publication of EP2607789A2 publication Critical patent/EP2607789A2/fr
Publication of EP2607789A3 publication Critical patent/EP2607789A3/fr
Application granted granted Critical
Publication of EP2607789B1 publication Critical patent/EP2607789B1/fr
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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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
    • F24C3/00Stoves or ranges for gaseous fuels
    • F24C3/08Arrangement or mounting of burners
    • F24C3/085Arrangement or mounting of burners on ranges

Definitions

  • the present invention relates to a cooking top 1, in particular for household use, according to the preamble of claim 1.
  • the present invention typically applies to cooking tops, in particular for household use, of the type comprising at least one burner, in particular a gas burner, for cooking foods placed in suitable containers.
  • Cooking tops of this type are known and widespread, in different forms, in every household kitchen.
  • such cooking tops are separate units; in other cases, such cooking tops are add-on components adapted to be flush-mounted in standard-size apertures obtained in the worktop of a sectional kitchen; or, in other cases, such cooking tops are the upper portion of a household appliance comprising an oven suitable for cooking foods.
  • Cooking tops are generally fitted with a cover that houses a plurality of cooking points.
  • Each cooking point is provided with at least one burner, in particular a gas burner, which is generally associated with one adjuster element (typically a tap) adapted to be operated by a user for turning on and/or off the burner and for adjusting the heat generated by said burner, said adjuster element allowing the user to adjust the gas flow, and hence the heat generated by combustion.
  • said adjuster element is associated with a knob, so that it is more ergonomical and can be operated more easily by a user.
  • the cooking tops known in the art comprise at least one burner secured to a base of the cooking top, also called “cooktop bottom box"; of course, said at least one burner typically comprises a plurality of burners secured to said base of the cooking top.
  • the cooking tops known in the art further comprise:
  • the heat generated by the burner may cause deformations in the elements that make up the cooking top; since the elements of the cooking top are rigidly secured to one another (as previously described, the following couplings are provided: burner and cooking top base; heat shielding element and burner; heat shielding element and plate associated with the glassy cover), any deformation of one element may in turn subject the other elements of the cooking top to heavy strains.
  • reference numeral 1 designates as a whole a cooking top, in particular for household use, of the type comprising a base 10 and at least one burner 20, in particular a gas burner, associated with said base 10.
  • said base 10 may also be called “cooktop bottom box”.
  • said cooking top 1 comprises a plurality of burners 20, more precisely four or five burners 20, preferably having different size and calorific power, which can be used as necessary with cooking containers (pots, pans, jugs and the like) having different dimensions and being suitable for cooking different types of foods.
  • Fig. 1 In particular, in the embodiment of Fig. 1 four burners 20 are arranged at the four corners of the quadrilateral that delimits the cooking top 1, whereas a fifth burner 20 is arranged centrally relative to the other four; it is however clear that the layout of the burners 20 on the cooking top 1 may be different from that shown in Fig. 1 .
  • Said burners 20 may be without distinction of the type taking primary air above or below the cooking top 1 whereon they are mounted, and may operate by natural or forced convection.
  • said burners 20 may generate a carpet flame or a crown flame depending on whether the outlet apertures of the burners 20 are horizontal or vertical. It is clear that each burner 20 may be equipped with at least one ignition spark plug and/or at least one thermocouple for verifying if the burner 20 is on; neither said ignition spark plug nor said thermocouples are shown in the drawings.
  • the cooking top 1 comprises at least one regulating element 20R for turning on/off and/or adjusting said at least one burner 20; the cooking top 1 normally comprises a number of regulating elements 20R matching the number of burners 20 on the cooking top 1.
  • Fig. 2 shows a first sectional view of a portion of the cooking top 1, in particular of that portion of the cooking top 1 which comprises said at least one burner 20.
  • said at least one burner 20 is secured to the base 10 by means of at least one fastening element 10E, preferably a self-tapping screw.
  • Figs. 3 and 5 show a second sectional view of a portion of the cooking top 1, said second view representing a first embodiment (shown in Fig. 3 ) and further embodiments (shown in Fig. 5 ), respectively, of said cooking top 1.
  • the burner 20 comprises a Venturi-effect chamber 21 extending substantially vertically within said burner 20; also, the chamber 21 extends in a central position within said burner 20, i.e. in such a way as to substantially coincide with an axis (substantially coinciding with the straight line A-A of Figs. 2 and 3 ) of the burner 20. It is however clear that the Venturi-effect chamber 21 may also be positioned otherwise within said burner 20 and may also extend horizontally.
  • the burner 20 is preferably made as one piece with a duct 22 (visible in Figs. 3 and 5 ) for supplying gas to said burner 20 and to said chamber 21; preferably, said duct 22 extends substantially horizontally within said burner 20, so as to limit the vertical extension thereof and, as a consequence, the height of the entire cooking top 1.
  • the plate 40 associated with the cover 30 allows a container to remain stably positioned on the cooking top 1 even should the material of the cover 30 break or crack. In addition, the plate 40 also ensures optimal strength and stability of the cooking top 1.
  • a top portion 40S of the plate 40 is secured to said cover 30, in particular by glueing.
  • Fig. 4 shows a detail P of the cross-section of Fig. 3 , said detail P being indicated in Figs. 3 and 4 by means of a dashed frame.
  • said cover 30 comprises a step (indicated as a whole by reference numeral 32) positioned in the proximity of said aperture 31, said step 32 constituting a supporting element for the heat shielding element 50.
  • step 32 is so realized as to comprise:
  • first portion 32A, second portion 32B and third portion 32C are clearly visible in Fig. 4 .
  • said heat shielding element 50 comprises:
  • the heat shielding element 50 is secured to the burner 20 at said inner edge 51 and cooperates with the step 32 at the outer edge 52; as a consequence, the heat shielding element 50 is not secured to the cover 30, but only rests thereon. This avoids the necessity of providing a rigid coupling among all the elements that make up the cooking top 1 according to the present invention.
  • the cooking top 1 comprises at least one first sealing element 60A, in particular a perimetric gasket, positioned between the outer edge 52 of the heat shielding element 50 and said step 32.
  • said at least one first sealing element 60A is made of flexible and/or elastic material, preferably a silicone-based material, so that it can adapt itself to the shape of the space created between the step 32 and the heat shielding element 50 when said heat shielding element 50 is inserted in the aperture 31 of the cover 30.
  • the provision of the first sealing element 60A allows to improve the absorption of a possible deformation of an element of the cooking top 1 subjected to the heat emanated by the burner 20, as well as to prevent said deformation from affecting the remaining elements of the cooking top 1.
  • the first gasket 60 ensures tightness to liquids, so that any liquid spilled on the cover 30 will not reach the inside of the cooking top 1.
  • the cooking top 1 further comprises at least one second gasket 60B positioned between the burner 20 and the heat shielding element 50 and adapted to limit the dispersion of heat from the burner 20 to the heat shielding element 50; preferably, said at least one second gasket 60B is made of a thermally insulating material, in particular mica or a silicone-based material, mica being preferable because of its better thermal insulation properties.
  • the first sealing element 60A and the second gasket 60B may possibly be made as one piece of silicone-based material.
  • Figures 6 , 7 and 8 relate to a second, a third and a fourth embodiments, respectively, of the cooking top 1 according to the present invention; in particular, Figures 6 , 7 and 8 show a detail P' of the cross-section of Fig. 5 , said detail P' being indicated by a dashed frame.
  • the cooking top 1 comprises a gasket (designated as a whole by reference numeral 60 in Fig. 6 , by reference numeral 160 in Fig. 7 , and by reference numeral 260 in Fig. 8 ) positioned in the proximity of said aperture 31, said gasket 60, 160, 260 being made of flexible and/or elastic material, preferably a silicone-based material, and constituting a supporting element for the heat shielding element 50; moreover, said gasket 60, 160, 260 also constitutes a sealing element adapted to prevent any liquid spilled on the cover 30 from penetrating into the cooking top 1.
  • a gasket designated as a whole by reference numeral 60 in Fig. 6 , by reference numeral 160 in Fig. 7 , and by reference numeral 260 in Fig. 8 positioned in the proximity of said aperture 31, said gasket 60, 160, 260 being made of flexible and/or elastic material, preferably a silicone-based material, and constituting a supporting element for the heat shielding element 50; moreover, said gasket 60
  • said gasket 60, 160, 260 is so realized as to rest on:
  • the gasket 60, 160, 260 comprises, as one piece, at least one first branch 61, 161, 261 made of elastic and/or flexible material, preferably a silicone-based material, in particular said at least one branch 61, 161, 261 extending towards said first surface 30A of the cover 30 when said gasket 60, 160, 260 is associated with the cooking top 1.
  • said particular shape of said at least one branch 61, 161, 261 allows to increase the elasticity of the gasket 60, 160, 260 and its ability to adapt itself to the shape of the space created between the cover 30, the plate 40 and the heat shielding element 50 when said heat shielding element 50 is inserted in the aperture 31 of the cover 30.
  • said gasket 60, 160, 260 further comprises, as one piece, at least one second branch 62, 162, 262 made of elastic and/or flexible material, preferably a silicone-based material, in particular said at least one second branch 62, 162, 261 resting at least partially on a top surface 30S of the cover 30 when said gasket 60, 160, 260 is associated with the cooking top 1.
  • at least one second branch 62, 162, 262 made of elastic and/or flexible material, preferably a silicone-based material, in particular said at least one second branch 62, 162, 261 resting at least partially on a top surface 30S of the cover 30 when said gasket 60, 160, 260 is associated with the cooking top 1.
  • the particular shape of said at least one second branch 62, 162, 262 allows to obtain a gasket 60, 160, 260 that provides better tightness to liquids and compensates for any unevenness in the cover 30.
  • the special provision of the gasket 60, 160, 260 allows to couple the heat shielding element 50 firmly to the cover 30 and to the plate 40, as well as to absorb any deformation of an element subjected to the heat emanated by the burner 20.
  • the heat shielding element 50 is, advantageously, not rigidly secured to the cover 30, but only rests on the cover 30 and on the plate 40, with the interposition of the gasket 60,160, 260 in the embodiments shown in Figures 5 to 8 .
  • the cooking top 1 according to the present invention is so realized as to not provide a rigid coupling among its components, in particular being so realized as to have no rigid constraint between the burner 20 and the cover 30, said rigid constraint being provided in the prior art by securing a heat shielding element to both the burner and the cover; consequently, the provisions of the present invention allow for better compensation of the expansions and/or deformations, in particular of thermal type, undergone by said burner 20 and/or said cover 30.
  • the cooking top 1 according to the present invention is thus so designed as to prevent any deformation undergone by an element subjected to the heat emanated by the burner 20 from creating heavy strains in the remaining elements of the cooking top 1, in particular in the cover 30 made of glassy material.
  • the heat shielding element 50 comprises:
  • the heat shielding element 50 is secured to the burner 20 at said inner edge 51 and lies on said gasket 60, 160, 260 at the outer edge 52.
  • said outer edge 52 of the heat shielding element 50 is not secured to the cover 30, but only lies thereon; it is thus possible to avoid a rigid coupling among all the elements that make up the cooking top 1 according to the present invention, allowing in particular the heat shielding element 50 to make small movements (of the order of approx. 1 mm) with respect to the cover 30.
  • the gasket (designated by reference numeral 160 in Fig. 7 and by reference numeral 260 in Fig. 8 ) substantially corresponds to that shown in Fig. 6 .
  • the gasket 160 of the third embodiment of Fig. 7 further comprises a strip 163 positioned between the plate 40 and the heat shielding element 50.
  • the strip 163 may also be sized in a manner such that it can be associated with the underside of the heat shielding element 50 and secured to the burner 20 through said fastening means 20M.
  • the strip 163 allows to insulate the heat shielding element 50 against humidity and leakage from the plate 40 and the burner 20, as well as to avoid that the heat coming from the burner 20 might reach the plate 40 by conduction. Moreover, said strip 163 constitutes a non-slip surface for the heat shielding element 50, thus facilitating an accurate and easy coupling thereof to the cooking top 1.
  • the gasket 260 of the fourth embodiment of Fig. 8 it comprises a core 263 made of a substantially incompressible material.
  • said core 263 is made of a thermoplastic material or a metallic material; more preferably, said core 263 is substantially buried in the material of the gasket 260.
  • said core 263 allows to confer high structural rigidity to the gasket 260, so as to improve the ability of said gasket 260 to act as a stable supporting element for the heat shielding element 50, in particular for the outer edge 52 of said heat shielding element 50.
  • the cooking top 1 comprises at least one second gasket 70 positioned between the burner 20 and the heat shielding element 50, said at least one second gasket 70 being preferably made of a thermally insulating material, such as, for example, silicone or, preferably, mica.
  • the heat shielding element 50 has an outer edge 52 that only rests on said cover 30, in particular through the interposition of the step 32, which allows the heat shielding element to be coupled to the cover 30 without rigidly constraining such elements to each other, and through the interposition of the gasket 60, 160, 260, which at the same time allows to:
  • the cooking top 1 according to the present invention is so realized that its component are not coupled in a rigid manner, in particular it being so realized as to avoid any rigid constraint between the cover 30, the heat shielding element 50 and the burner 20; this allows to obtain high flexibility between said burner 20 and the cover 30.
  • the cooking top 1 is so realized as to prevent any deformation undergone by an element subjected to the heat emanated by the burner 20 from creating heavy strains in the remaining elements of the cooking top 1, in particular in the cover 30 made of glassy material.
  • the present invention also attains the advantage of limiting the height of the cooking top 1, since the heat shielding element 50 remains substantially flush with the cover 30.
  • the difference in height between the heat shielding element 50 and the cover 30 is only due, in fact, to the first gasket 60 resting on the top surface of the cover 30, and can therefore be limited to approx. 1 mm. This makes the cooking top 1 much easier to clean.
  • the gasket 60, 160, 260 is so realized as to comprise both a strip 160 and a core 263 made of a substantially incompressible material.
  • a variant offers a combination of the advantages deriving from each one of said elements. It can therefore be easily understood that the present invention is not limited to the above-described cooking top, in particular for household use, but may be subject to many modifications, improvements or replacements of equivalent parts and elements without departing from the inventive idea, as clearly specified in the following claims.

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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)
  • Baking, Grill, Roasting (AREA)
EP12199216.8A 2011-12-22 2012-12-21 Plaque de cuisson, en particulier pour usage domestique Active EP2607789B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
IT001190A ITTO20111190A1 (it) 2011-12-22 2011-12-22 Piano di cottura, in particolare ad uso domestico
IT001191A ITTO20111191A1 (it) 2011-12-22 2011-12-22 Piano di cottura, in particolare ad uso domestico

Publications (3)

Publication Number Publication Date
EP2607789A2 true EP2607789A2 (fr) 2013-06-26
EP2607789A3 EP2607789A3 (fr) 2013-09-11
EP2607789B1 EP2607789B1 (fr) 2017-02-01

Family

ID=47358428

Family Applications (1)

Application Number Title Priority Date Filing Date
EP12199216.8A Active EP2607789B1 (fr) 2011-12-22 2012-12-21 Plaque de cuisson, en particulier pour usage domestique

Country Status (1)

Country Link
EP (1) EP2607789B1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2960581A1 (fr) * 2014-06-25 2015-12-30 BSH Hausgeräte GmbH Dispositif de positionnement, plaque de cuisson et cuisiniere

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0964203A1 (fr) * 1998-06-09 1999-12-15 SABAF S.p.A. Brûleur à gaz
ITMI20020315A1 (it) * 2002-02-18 2003-08-18 Sabaf Spa Piano di cottura in vetro temprato o altro materiale termicamente degradabile
JP2005291582A (ja) * 2004-03-31 2005-10-20 Rinnai Corp ガスコンロ
EP2295868B1 (fr) * 2009-09-09 2016-10-26 BSH Hausgeräte GmbH Plaque de cuisson à gaz et gazinière dotée d'une plaque de cuisson à gaz correspondante

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
None

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2960581A1 (fr) * 2014-06-25 2015-12-30 BSH Hausgeräte GmbH Dispositif de positionnement, plaque de cuisson et cuisiniere
EP2960581B1 (fr) * 2014-06-25 2019-09-11 BSH Hausgeräte GmbH Plaque de cuisson

Also Published As

Publication number Publication date
EP2607789A3 (fr) 2013-09-11
EP2607789B1 (fr) 2017-02-01

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