US20130000630A1 - Gas cooking appliance - Google Patents

Gas cooking appliance Download PDF

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Publication number
US20130000630A1
US20130000630A1 US13/581,501 US201113581501A US2013000630A1 US 20130000630 A1 US20130000630 A1 US 20130000630A1 US 201113581501 A US201113581501 A US 201113581501A US 2013000630 A1 US2013000630 A1 US 2013000630A1
Authority
US
United States
Prior art keywords
gas
burner
cooking appliance
thermosetting
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.)
Abandoned
Application number
US13/581,501
Other languages
English (en)
Inventor
Cedric Catalogne
Marco Starnini
Fabio Rasi
Fabio Treossi
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
Publication of US20130000630A1 publication Critical patent/US20130000630A1/en
Abandoned legal-status Critical Current

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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.
  • 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).
  • These 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.
  • 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 or thermoplastic material a thermosetting or thermoplastic material
  • two or more of these parts can be integrated in a single piece of thermosetting or thermoplastic material by a single injection moulding process. Possibly, 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 or thermoplastic material:
  • At least two of said components are made as a single piece of thermosetting or thermoplastic material.
  • the single piece may include 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 may include the gas rail.
  • the single piece may include the at least one gas connection pipe.
  • the single piece may include 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 or thermoplastic material.
  • the support frame may comprise at least one crossbar holding said at least one burner and this crossbar is made of thermosetting or thermoplastic 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 or thermoplastic 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 or thermoplastic 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 or thermoplastic material.
  • the present invention relates to a process for producing a gas cooking appliance comprising at least the following components:
  • thermosetting or thermoplastic material at least one of said components and then assembling together said components.
  • the step of moulding preferably comprises moulding together with a thermosetting or thermoplastic material at least two of said components so as to form a single piece.
  • FIG. 1 is a perspective view of part of a cooking hob (or cooktop) according to the present invention
  • FIG. 2 is a top view of the same part of the cooking hob of FIG. 1 ;
  • FIG. 3 is an exploded view of a burner that is part of the cooking hob of FIG. 1 ;
  • FIG. 4 is a perspective view of the cooking hob of FIG. 1 , in which also a top plate (or plateau) is shown;
  • FIG. 5 shows an elbow connection to connect part of the cooking hob of the present invention with an external feeding pipe
  • FIG. 6 is a perspective view of a free standing cooker a cooking system according to the present invention.
  • FIGS. 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 FIG. 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.
  • valves 9 the complexity of this component does not render it particularly suitable for a realization in thermoplastic or thermosetting material.
  • 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 Range of values Material Parameter 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 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 Range of values Material Parameter Tensile Strength 150-250 MPa Linear Dilation Coefficient 12 ⁇ 10 ⁇ 6 -19 ⁇ 10 ⁇ 6 mm ° C. Flammability V0 Class Water absorption ⁇ 0.2% HDT (heat deflection temperature) 220-280° C. Upper Limit Temperature Index >150° C. Moulding Process Parameter Injection Temperature >250° C. Mould temperature >100° C.
  • Injection time (*) ⁇ 4 s Stay Time in the Mould (**) about 40 s for material thickness ⁇ 3 mm or about 10 s for each mm of material thickness Cooling Time about 10 s for each mm of material thickness Injection Pressare 800-1500 Bar Notes: (*) The injection time can be defined as the polymerization time (**) Stay Time Cooling Time + Injection Time + Machine Movement Time
  • 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 FIG. 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 FIG. 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 .
  • the 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 FIG. 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.
US13/581,501 2010-03-18 2011-03-03 Gas cooking appliance Abandoned US20130000630A1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
EP10156864.0A EP2366953B1 (en) 2010-03-18 2010-03-18 Gas cooking appliance
EP10156864.0 2010-03-18
PCT/EP2011/053216 WO2011113705A1 (en) 2010-03-18 2011-03-03 Gas cooking appliance

Publications (1)

Publication Number Publication Date
US20130000630A1 true US20130000630A1 (en) 2013-01-03

Family

ID=42710756

Family Applications (1)

Application Number Title Priority Date Filing Date
US13/581,501 Abandoned US20130000630A1 (en) 2010-03-18 2011-03-03 Gas cooking appliance

Country Status (7)

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

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20150153046A1 (en) * 2012-05-22 2015-06-04 BSH Bosch und Siemens Hausgeräte GmbH Gas-heated cooking device
CN114321917A (zh) * 2022-01-26 2022-04-12 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
USD1005769S1 (en) 2021-09-08 2023-11-28 Newage Products Inc. Oven

Citations (10)

* Cited by examiner, † Cited by third party
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
US5640947A (en) * 1995-02-15 1997-06-24 Shute; Alan B. Counter-top cooking unit using natural stone
US6437297B2 (en) * 2000-01-15 2002-08-20 Schott Glas Kitchen appliance with a cooktop receptacle provided in a work surface
US20050095547A1 (en) * 2003-10-31 2005-05-05 Pottenger John T. Burner assembly and cooktop including same
US20050194004A1 (en) * 2004-03-02 2005-09-08 M Management-Tex, Ltd. Cooktop gasket
US20050205078A1 (en) * 2004-03-17 2005-09-22 Dan Siegel Bench top grill assembly
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
US20110143295A1 (en) * 2009-12-14 2011-06-16 Electrolux Home Products, Inc. Burner designed for wide range of input rates

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GB971185A (en) * 1962-06-30 1964-09-30 Frank Lupton Improvements in or relating to portable kitchens
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US5370527A (en) * 1992-10-28 1994-12-06 The Coleman Company, Inc. Fuel tube for burner assembly with remote fuel tank
EP0615096A1 (en) 1993-03-12 1994-09-14 Etna B.V. Cooking plateau with integrated functions
US6006743A (en) * 1998-02-17 1999-12-28 Heat-N-Glo Fireplace Products, Inc. Indoor-outdoor portable gas burner
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
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
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

Patent Citations (10)

* Cited by examiner, † Cited by third party
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
US5640947A (en) * 1995-02-15 1997-06-24 Shute; Alan B. Counter-top cooking unit using natural stone
US6437297B2 (en) * 2000-01-15 2002-08-20 Schott Glas Kitchen appliance with a cooktop receptacle provided in a work surface
US20050095547A1 (en) * 2003-10-31 2005-05-05 Pottenger John T. Burner assembly and cooktop including same
US20050194004A1 (en) * 2004-03-02 2005-09-08 M Management-Tex, Ltd. Cooktop gasket
US20050205078A1 (en) * 2004-03-17 2005-09-22 Dan Siegel Bench top grill assembly
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
US20110143295A1 (en) * 2009-12-14 2011-06-16 Electrolux Home Products, Inc. Burner designed for wide range of input rates

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20150153046A1 (en) * 2012-05-22 2015-06-04 BSH Bosch und Siemens Hausgeräte GmbH Gas-heated cooking device
US10634361B2 (en) * 2012-05-22 2020-04-28 BSH Hausgeräte GmbH Gas-heated cooking device
USD1005769S1 (en) 2021-09-08 2023-11-28 Newage Products Inc. Oven
CN114321917A (zh) * 2022-01-26 2022-04-12 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

Also Published As

Publication number Publication date
EP2366953A1 (en) 2011-09-21
RU2556742C2 (ru) 2015-07-20
BR112012023436A2 (pt) 2017-10-24
WO2011113705A1 (en) 2011-09-22
CN102834672B (zh) 2016-02-17
AU2011229358A1 (en) 2012-09-27
RU2012144284A (ru) 2014-04-27
CN102834672A (zh) 2012-12-19
AU2011229358B2 (en) 2015-05-07
EP2366953B1 (en) 2016-06-15

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