EP2366953B1 - Gas cooking appliance - Google Patents

Gas cooking appliance Download PDF

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Publication number
EP2366953B1
EP2366953B1 EP10156864.0A EP10156864A EP2366953B1 EP 2366953 B1 EP2366953 B1 EP 2366953B1 EP 10156864 A EP10156864 A EP 10156864A EP 2366953 B1 EP2366953 B1 EP 2366953B1
Authority
EP
European Patent Office
Prior art keywords
gas
burner
cooking appliance
rail
single piece
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
EP10156864.0A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP2366953A1 (en
Inventor
Marco Starnini
Fabio Rasi
Fabio Treossi
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
Priority to EP10156864.0A priority Critical patent/EP2366953B1/en
Application filed by Electrolux Home Products Corp NV filed Critical Electrolux Home Products Corp NV
Priority to AU2011229358A priority patent/AU2011229358B2/en
Priority to CN201180014406.XA priority patent/CN102834672B/zh
Priority to BR112012023436A priority patent/BR112012023436A2/pt
Priority to US13/581,501 priority patent/US20130000630A1/en
Priority to RU2012144284/03A priority patent/RU2556742C2/ru
Priority to PCT/EP2011/053216 priority patent/WO2011113705A1/en
Publication of EP2366953A1 publication Critical patent/EP2366953A1/en
Application granted granted Critical
Publication of EP2366953B1 publication Critical patent/EP2366953B1/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 RANGES ; DETAILS OF DOMESTIC STOVES OR RANGES, OF GENERAL APPLICATION
    • F24C15/00—Details
    • F24C15/10—Tops, e.g. hot plates; Rings
    • 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
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T29/00—Metal working
    • Y10T29/49—Method of mechanical manufacture
    • Y10T29/49348—Burner, torch or metallurgical lance making

Definitions

  • the present invention relates to a gas cooking appliance, such as a gas cooktop (or cooking hob) or a free standing cooker, according to the preamble of claim 1.
  • a gas cooking appliance comprises one or more burners rigidly connected to a supporting and protective structure, and a gas feeding circuit to feed gas to the burner(s).
  • a cooktop typically comprises a supporting plate or frame of rectangular shape and having a plurality of seats, a plurality of burners positioned in the seats and fixed to the supporting frame, and a gas feeding circuit, to feed combustion gas to the burners.
  • These parts are typically assembled with each other so as to form a single rigid body.
  • each burner typically comprises a burner body fixed to the supporting frame, a burner crown held by the burner body and having circumferential openings for the exit of the air-gas combustion mixture, a cap closing the burner top, a gas injector to eject a gas flow into the burner body, a tubular element (typically integrated in the burner crown) for air/gas mixing by means of the Venturi effect, a thermocouple and a spark plug support (also usually integrated in the burner crown).
  • burners may have different dimensions, as well as different size of the burner ports so as to achieve different velocity, pressure, inclination and distribution of the air-gas mixture. Moreover, it Is possible to have more complex burner structures, with two or even three flame crowns.
  • the gas feeding circuit typically comprises a gas rail extending along one side of the supporting frame and designed to be connected to an external gas feeding pipe, a plurality of valves distributed along the gas rail in a number corresponding to the number of burners, a corresponding number of gas pipes connecting the gas rail to the burner via the valves, and a plurality of joints (typically “elbow”, “push on” and “Boule and nut” connectors), to connect each other the external gas feeding pipe with the gas rail, the gas rail with the valves, the valves with the pipes, and the pipes with the burners.
  • joints typically "elbow”, "push on” and "Boule and nut” connectors
  • the cooktop also comprises a top plate, which is positioned onto the supporting frame to define therebetween a space where the gas feeding circuit is arranged.
  • the burners are typically made of die cast aluminium, which is safe, easy to cast and long lasting.
  • the other above-mentioned parts of the appliance like the connection pipes, the gas valves and the main rail, are usually made of aluminium, zinc plated, iron or brass.
  • a gas burner for a cooking hob wherein a burner body, a flame-dividing element defining together with said burner body an air/gas mixing chamber, and a converging/diverging duct defining a Venturi tube located downstream of a gas injector, are part of a monolithic structure in the form of a pressed sheet-metal casing, in particular made of steel.
  • EP0615096A1 Another solution for making the production process of a cooking hob easier and cheaper is suggested by EP0615096A1 , which describes a cooking plateau for a gas device made of a heat-resistant material, such as glass, plastic, aluminium, or ultra-deep drawn steel.
  • the cooking plateau integrates burner housings, pan supports, and hinge points, so as to have a single plate-shaped part suitable to achieve different functions.
  • GB 2 266 140 A discloses a cooker top provided with a plurality of gas burners carried by a plurality of central blocks. Said central blocks include ducts for supplying to the gas burners. The cooker top comprises at least one lateral ramp for supplying gas. The central blocks are interchangeable with one another. The central blocks and the ramp form modules for the cooker top. The central blocks and the ramp may be made of thermoplastic material.
  • the Applicant has found that by making one or more parts of a gas cooking appliance of a thermosetting or thermoplastic material by an injection moulding process it is possible to reduce the production costs, since the cost per single piece is lower and it is possible to integrate some of these parts in a single piece by the same moulding process. Moreover, by integrating some parts together in a single piece the overall production process can be sensibly simplified and the final gas cooking appliance can be easier to assemble/disassemble.
  • thermosetting material is a polymer material for which it is not possible to define a melting point, and a progressive increase a temperature would not result in its melting but instead in its burn.
  • the material is a resin consisting of at least two monomers bound together to form a polymer through branching (cross-linking process) under the action of a catalyst activated by a temperature increase.
  • thermoplastic material there is no cross-linking process, and the polymeric chains overlap one onto the other without a precise order (or with a predetermined orientation in the case of semi-crystalline structures) and without chemical constraints, so that in this case a melting point can be defined.
  • thermosetting material a thermosetting material
  • thermosetting material thermosetting material
  • all these parts may be realized as a single piece.
  • the present invention thus relates to a gas cooking appliance, comprising a support frame, at least one burner rigidly connected to the support frame, and a gas feeding circuit to feed gas to the burner, wherein at least one of the following components is made of a thermosetting material:
  • At least three of said components are made as a single piece of thermosetting material.
  • the single piece includes at least part of the support frame.
  • the single piece may include the at least one burner body.
  • the at least one burner body includes supports for a thermocouple and a spark plug.
  • the single piece includes the gas rail.
  • the single piece may include the at least one gas connection pipe.
  • the single piece includes the connection member.
  • the gas cooking appliance comprises a plurality of burner bodies and a plurality of gas connection pipes, each connection pipe being designed to feed gas from the gas rail to a corresponding burner body, and the single piece includes all the burner bodies and all the connection pipes.
  • the single piece may also include also a plurality of joints connecting with each other different parts of the single piece.
  • the support frame comprises a horizontal plate having at least one seat for hosting said at least one burner and this plate is made of thermosetting material.
  • the support frame may comprise at least one crossbar holding said at least one burner and this crossbar is made of thermosetting material.
  • the support frame may also comprise, on each side of the appliance, two vertical bars (one on the front side and one on the back side of the appliance) and two horizontal bars (one on the top side and one on the bottom side of the appliance) and, in one possible embodiment, these vertical bars and/or these horizontal bars are made of thermosetting material.
  • the gas cooking appliance may advantageously comprise a plurality of burners, each burner including a burner body, and all the burner bodies may be made of thermosetting material.
  • the gas feeding circuit may comprise a plurality of gas connection pipes to feed gas to said burners, and all the gas connection pipes may be made of thermosetting material.
  • the present invention relates to a process for producing a gas cooking appliance comprising at least the following components:
  • the step of moulding comprises moulding together with a thermosetting material at least three of said components so as to form a single piece.
  • Figures 1 and 2 show part of a gas cooking hob 1 according to a first embodiment the present invention.
  • the hob 1 comprises a lower supporting frame (or plate) 2, a plurality of burners 3 and a gas feeding circuit 4.
  • the supporting plate 2 is a cup-shaped planar rectangular body, laying horizontally, designed to support a plurality of other components described below.
  • the burners 3 are positioned in predetermined points of the frame 2. In the present embodiment there are four burners 3 positioned according to the vertices of a square or a rectangle.
  • each burner 3 comprises:
  • the gas feeding circuit 4 comprises:
  • the hob 1 also comprises a top plate (or work plate) 12, which is arranged onto the lower supporting plate 2 to define there between a space where the gas feeding circuit is arranged.
  • the top plate 12 has a plurality of holes where the burners 3 can extend through.
  • the hob 1 further comprises a plurality of knobs 13 (only one of which is represented in Figure 4 ) connected to the valves 9.
  • thermosetting or thermoplastic material are realized in a thermosetting or thermoplastic material and are preferably made integral with each other in one piece by means of a moulding process.
  • thermosetting or thermoplastic material can be selectively made of a thermosetting or thermoplastic material by an injection moulding process:
  • thermocouple 16 this part cannot be made of thermosetting and thermoplastic material because of the presence of electrical components.
  • the present invention it is also particularly advantageous to integrate in a single piece two or more of the above parts, by means of a single moulding process.
  • the following parts could be made integral with each other: the supporting frame 2 and the burner bodies 5, the supporting frame 2 and the gas rail 8, the supporting frame 2 and the connection pipes 10 or part thereof, the gas rail 8 and the elbow connection 19, each burner body with at least a part of the connection pipe 10.
  • the parts that are not made in one piece can be assembled with the other parts according to traditional fixing techniques.
  • the parts that are not made in one piece can be made of thermosetting or thermoplastic material as well, by means of a separate moulding process, and then assembled with the others by means of traditional fixing techniques.
  • thermosetting and thermoplastic materials defined by the following ranges of parameters are particularly suitable for the scope of the present invention.
  • Thermosetting materials Material Parameter Range of values Tensile Strength 70-130 Mpa Linear Dilation Coefficient 10-10 -6 - 30 ⁇ 10 -6 mm °C Flammability V0 Class Water absorption ⁇ 0,5% HDT (heat deflection temperature) ⁇ 220 °C Upper Limit Temperature Index ⁇ 120 °C Moulding Process Parameter Range of values Injection Temperature Equal to mould temperature Mould temperature 130-160 °C Injection time (*) Equal to stay time in the mould Stay Time in the Mould 30-40 s/mm Cooling Time no cooling time Compression Pressure 40-110 BAR Notes: - (*) The injection time can be defined as the polimerization time Thermoplastic Materials Material Parameter Range of values Tensile Strength 150-250 MPa Linear Dilation Coefficient 12x10 -6 - 19x10 -6 mm °C Flammability V
  • FIG. 6 shows another type of appliance, in particular a free standing cooker 101, realized according to the present invention.
  • the free standing cooker 101 comprises a support frame 102, a plurality of burners 103 rigidly connected, directly or indirectly, to the support frame 102, and a gas feeding circuit 104.
  • the burners 103 can be made as previously described with reference to Figure 3 .
  • the support frame 102 comprises an assembly of elongated structural elements placed vertically or horizontally along the perimeter of the appliance so as to form the skeleton thereof, to which the externals panels, such as the side panels 151 of Figure 6 , and the various internal parts, are connected.
  • the supporting frame 102 could comprise, on each side of the appliance, two vertical bars 141 (one on the front and one on the back of the appliance) and two horizontal bars 142 (one on the top and one on the bottom of the appliance), forming respective rectangular bodies.
  • the support frame 102 also comprises two crossbars 144 extending parallel to each other between the two horizontal bars 142 so as to define supporting elements for the burners 103.
  • the burners 103 are rigidly connected to the crossbars 144.
  • bars 141, 142 and 144 may be made of thermosetting and thermoplastic material.
  • all the mentioned bars can be made of thermosetting and thermoplastic material, and in another possible embodiment only the crossbars 144 is made of thermosetting and thermoplastic material while the bars 141 and 142 are made of another material, preferably metal.
  • the cooker 101 also comprises a top plate, not represented in Figure 6 , having substantially the same shape and function of the top plate 12 of the hob 1 previously described.
  • the two crossbars 144 may be missing, and the burners 103 may be directly held by the top plate.
  • the burners 103 are rigidly connected to the support frame 102, formed by the bars 141 and 142, through (i.e. by means of) the top plate.
  • the gas feeding circuit 104 comprises connection pipes 110, one for each burner, a rail 108 similar to the one of the hob 1, and a connection member (not shown) to connect the gas rail with the external gas feeding pipe.
  • thermosetting or thermoplastic material At least one, but preferably more than one, of these components is realized in a thermosetting or thermoplastic material. If two or more components are made of thermosetting or thermoplastic material, these components can be possibly made integral with each other in one piece by means of a moulding process. In particular, it is possible to make of a thermosetting or thermoplastic material one or more of the following components:
  • the burners could be made according to different designs known in the art, such as with more than one flame crowns and a more complex structure.
  • the injectors could be also considered as part of the gas feeding circuit and be integrated with the connecting pipes.
  • the connector 19 can be of a different type than an elbow connector.
  • the present invention offers several advantages over the prior art.
  • thermoplastic component(s) made by the moulding process can be easily and quickly assembled with the other parts, and this advantage provides benefit in both the production process and possible maintenance/repair process, where the apparatus must be disassembled and then assembled again.
EP10156864.0A 2010-03-18 2010-03-18 Gas cooking appliance Active EP2366953B1 (en)

Priority Applications (7)

Application Number Priority Date Filing Date Title
EP10156864.0A EP2366953B1 (en) 2010-03-18 2010-03-18 Gas cooking appliance
CN201180014406.XA CN102834672B (zh) 2010-03-18 2011-03-03 燃气烹调设备
BR112012023436A BR112012023436A2 (pt) 2010-03-18 2011-03-03 aparelho para cozimento a gás
US13/581,501 US20130000630A1 (en) 2010-03-18 2011-03-03 Gas cooking appliance
AU2011229358A AU2011229358B2 (en) 2010-03-18 2011-03-03 Gas cooking appliance and process for producing same
RU2012144284/03A RU2556742C2 (ru) 2010-03-18 2011-03-03 Бытовая газовая плита
PCT/EP2011/053216 WO2011113705A1 (en) 2010-03-18 2011-03-03 Gas cooking appliance

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP10156864.0A EP2366953B1 (en) 2010-03-18 2010-03-18 Gas cooking appliance

Publications (2)

Publication Number Publication Date
EP2366953A1 EP2366953A1 (en) 2011-09-21
EP2366953B1 true EP2366953B1 (en) 2016-06-15

Family

ID=42710756

Family Applications (1)

Application Number Title Priority Date Filing Date
EP10156864.0A Active EP2366953B1 (en) 2010-03-18 2010-03-18 Gas cooking appliance

Country Status (7)

Country Link
US (1) US20130000630A1 (ru)
EP (1) EP2366953B1 (ru)
CN (1) CN102834672B (ru)
AU (1) AU2011229358B2 (ru)
BR (1) BR112012023436A2 (ru)
RU (1) RU2556742C2 (ru)
WO (1) WO2011113705A1 (ru)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ES2430939R1 (es) * 2012-05-22 2014-03-03 BSH Electrodomésticos España S.A. Aparato de cocción calentado a gas
USD1005769S1 (en) 2021-09-08 2023-11-28 Newage Products Inc. Oven
CN114321917B (zh) * 2022-01-26 2023-04-07 佛山市顺德区美的洗涤电器制造有限公司 燃烧器以及燃气灶

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB802976A (en) * 1955-11-22 1958-10-15 Seppelfricke Geb Gmbh Automatic ignition device for gas heated cooking apparatus
GB971185A (en) * 1962-06-30 1964-09-30 Frank Lupton Improvements in or relating to portable kitchens
GB1166135A (en) * 1967-05-20 1969-10-08 G T Oakes Tools Ltd Improvements in or relating to camping and like stoves
EP0594964A2 (en) * 1992-10-28 1994-05-04 The Coleman Company, Inc. Fuel tube for burner assembly with remote fuel tank
GB2334328A (en) * 1998-02-17 1999-08-18 Heat N Glo Fireplace Prod Inc Portable gas burner

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Publication number Priority date Publication date Assignee Title
US1571053A (en) * 1924-08-06 1926-01-26 Cribben & Sexton Company Gas range
US3866018A (en) * 1974-04-01 1975-02-11 Gen Electric Molded plastic cooktop with heated glass-ceramic plate insert
IT229035Y1 (it) * 1992-04-07 1998-06-24 Zanussi Elettrodomestici Piano di cottura modulare
EP0615096A1 (en) 1993-03-12 1994-09-14 Etna B.V. Cooking plateau with integrated functions
US5640947A (en) * 1995-02-15 1997-06-24 Shute; Alan B. Counter-top cooking unit using natural stone
FR2783596B1 (fr) * 1998-09-23 2001-03-09 Eurokera Ensemble prefabrique destine a la realisation de tables de cuisson
DE19900178C1 (de) * 1999-01-07 2000-05-25 Schott Glas Formkörper aus Sprödwerkstoff, eingefaßt in einem Kunststoffrahmen aus temperaturbeständigem, relaxierfähigem, thermoplastischem Material
DE10001451C1 (de) * 2000-01-15 2001-01-25 Schott Glas Kücheneinrichtungsgegenstand mit in einer Arbeitsplatte vorgesehenen Kochfeld-Aufnahme
IT1315325B1 (it) 2000-04-28 2003-02-10 Paolo Moresco Bruciatore a gas per piano di cottura
ITMI20020315A1 (it) * 2002-02-18 2003-08-18 Sabaf Spa Piano di cottura in vetro temprato o altro materiale termicamente degradabile
ITTO20020101U1 (it) * 2002-05-20 2003-11-20 Merloni Elettrodomestici Spa Bruciatore di gas per piano di cottura domestico.
FR2845461A1 (fr) * 2002-10-04 2004-04-09 Sourdillon Sa Bruleur a gaz
US20050095547A1 (en) * 2003-10-31 2005-05-05 Pottenger John T. Burner assembly and cooktop including same
CA2557647A1 (en) * 2004-03-02 2005-09-15 M-Management-Tex, Ltd. Cooktop gasket
US20050205078A1 (en) * 2004-03-17 2005-09-22 Dan Siegel Bench top grill assembly
CN2694148Y (zh) * 2004-04-23 2005-04-20 高其容 一种集中排烟管
RU42725U1 (ru) * 2004-06-24 2004-12-10 Открытое акционерное общество "Ново-Вятка" Плита газовая
US20070062513A1 (en) * 2005-09-21 2007-03-22 Gagas John M Cooking system with ventilator and blower
US7671301B2 (en) * 2006-11-02 2010-03-02 Bsh Home Appliances Corporation Cooking appliance cowling apparatus and method
US8899972B2 (en) * 2009-12-14 2014-12-02 Electrolux Home Products, Inc. Burner designed for wide range of input rates

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB802976A (en) * 1955-11-22 1958-10-15 Seppelfricke Geb Gmbh Automatic ignition device for gas heated cooking apparatus
GB971185A (en) * 1962-06-30 1964-09-30 Frank Lupton Improvements in or relating to portable kitchens
GB1166135A (en) * 1967-05-20 1969-10-08 G T Oakes Tools Ltd Improvements in or relating to camping and like stoves
EP0594964A2 (en) * 1992-10-28 1994-05-04 The Coleman Company, Inc. Fuel tube for burner assembly with remote fuel tank
GB2334328A (en) * 1998-02-17 1999-08-18 Heat N Glo Fireplace Prod Inc Portable gas burner

Also Published As

Publication number Publication date
BR112012023436A2 (pt) 2017-10-24
AU2011229358A1 (en) 2012-09-27
RU2012144284A (ru) 2014-04-27
RU2556742C2 (ru) 2015-07-20
EP2366953A1 (en) 2011-09-21
CN102834672A (zh) 2012-12-19
US20130000630A1 (en) 2013-01-03
WO2011113705A1 (en) 2011-09-22
CN102834672B (zh) 2016-02-17
AU2011229358B2 (en) 2015-05-07

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