EP1255081B1 - Atmospheric gas burner of radiant type - Google Patents
Atmospheric gas burner of radiant type Download PDFInfo
- Publication number
- EP1255081B1 EP1255081B1 EP02007379A EP02007379A EP1255081B1 EP 1255081 B1 EP1255081 B1 EP 1255081B1 EP 02007379 A EP02007379 A EP 02007379A EP 02007379 A EP02007379 A EP 02007379A EP 1255081 B1 EP1255081 B1 EP 1255081B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- burner
- chamber
- chambers
- gas
- porous ceramic
- 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.)
- Expired - Lifetime
Links
- 239000000919 ceramic Substances 0.000 claims description 6
- 239000000203 mixture Substances 0.000 claims description 4
- 238000010411 cooking Methods 0.000 description 14
- 239000007789 gas Substances 0.000 description 14
- 239000002241 glass-ceramic Substances 0.000 description 5
- 238000002485 combustion reaction Methods 0.000 description 4
- 229910010293 ceramic material Inorganic materials 0.000 description 3
- 239000002184 metal Substances 0.000 description 2
- 239000003054 catalyst Substances 0.000 description 1
- 239000000567 combustion gas Substances 0.000 description 1
- 230000000295 complement effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 239000011214 refractory ceramic Substances 0.000 description 1
- 125000006850 spacer group Chemical group 0.000 description 1
- 230000001960 triggered effect Effects 0.000 description 1
Images
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
- F24C3/00—Stoves or ranges for gaseous fuels
- F24C3/04—Stoves or ranges for gaseous fuels with heat produced wholly or partly by a radiant body, e.g. by a perforated plate
- F24C3/06—Stoves or ranges for gaseous fuels with heat produced wholly or partly by a radiant body, e.g. by a perforated plate without any visible flame
- F24C3/067—Ranges
Definitions
- the present invention relates to an atmospheric gas burner of radiant type in accordance with the introduction to the accompanying claim 1 and known from EP-A-109 1176 .
- Atmospheric gas burners of radiant type comprising a porous refractory ceramic element (with or without catalyst) closing a chamber into which the air/gas mixture is fed through an injector, in which the gas (the variable throughput of which is controlled by a valve operated by a knob) acts as the vector fluid, i.e. for drawing-in the combustion air.
- the burner conceived in this manner is located at a distance below a profiled or non-profiled glass ceramic plate acting as a heat receiver.
- An example of a burner of thus type is described in a previous utility model in the name of the same applicant.
- the burner of the prior art is not always able to provide the required performance. This is the case for example when saucepans of considerably different diameter or perimeter are required to be positioned on one and the same burner (of given dimensions). If the burner is sized for the smaller saucepan, cooking requires a much longer time if the larger saucepan is used instead (even if the burner is used at its maximum thermal power). If the burner is sized for the larger saucepan, using the smaller saucepan results in considerable energy wastage even if the burner is operated at low power.
- An example of this situation is that of a fish-kettle (representing the larger pan) and a frying pan occupying a surface area of one half that of the fish-kettle.
- the object of the present invention is to provide a burner able to satisfy different thermal requirements determined by the bearing dimensions of the cooking utensil, in a simple and economical manner.
- the cooking appliance represented presents three cooking positions, which can be different or equal to each other and are indicated by 1. It comprises (see Figure 3 in particular) a glass ceramic flat element or plate 2 on which the cooking utensil rests.
- the plate 2 is supported by a metal spacer means 3 in front of a burner indicated overall by 4.
- the burner comprises a discoidal central part 5 of porous ceramic material and a circular annular part 6 also of porous ceramic material, having an inner diameter substantially equal to the outer diameter of the discoidal central part 5.
- the two parts 5 and 6 can be a single disc, i.e. a single part.
- a metal support body 7 is provided presenting an inner cylindrical wall 9 and a common base wall 10.
- the discoidal central part 5 (or the corresponding region in the one-piece arrangement) defines, with the inner cylindrical wall 9 and the base wall 10, a cylindrical chamber 11.
- the annular part 6 (or the corresponding region of the one-piece arrangement) defines, together with the inner cylindrical wall 9, the outer cylindrical wall 8 and the base wall 10, an annular chamber 12.
- the inner cylindrical chamber 11 is connected to a conduit 13, which passes through the annular chamber 12 and carries a conventional injector 14 for the gas which, by the venturi effect, draws the combustion air through intake apertures 15 present in the conduit 13.
- a similar injector 16 present in a conduit 17 provided with combustion air intake apertures.
- the injectors of the two chambers are connected by pipes 18, 19 to a two-exit cock 20 of known type connected to the gas source and controlled by one and the same knob 21 to feed gas to the inner chamber 11 from its minimum to its maximum value, and then, by rotating the said knob, to feed gas to the annular chamber 12, for example from its maximum to its minimum value, while feeding gas at maximum value to the inner chamber 11.
- the cock 20 is opened within a first adjustment range by which gas is controlledly fed to only that chamber. Flameless combustion of the air/gas mixture passing through the porous ceramic mass 5 covering the chamber 11 is triggered in known traditional manner.
- the air/gas mixture is made to also controlledly enter the outer annular chamber 12, and is ignited by passage through the porous ceramic mass 6 covering the chamber 12, while the chamber 11 is fed at its maximum value, with the result that the entire porous mass (disc 5 plus ring 6) intervenes in heating the glass ceramic plate 2.
- FIG. 4 The arrangement of Figure 4 , in which parts equal or corresponding to those of Figures 1-3 are indicated by the same reference numerals plus the letter A, comprises two partly complementary adjacent chambers 11A and 12A, one cylindrical and the other similar to an annular sector, closed respectively by a discoidal part 5A of porous ceramic material and by a part 6A of shape matching that of the underlying chamber 12A. Again in this case gas flows to the two chambers via a cock controlled by the same knob.
- the two parts 5A and 6A can again in this case represent two regions of one and the same piece.
- the heat receiver represented by glass ceramic discs in the embodiment of Figures 1-3 , is in this case shaped relatively.
- the heat receiver can be a single plate, for example rectangular, common to all the burners used, although the fact of having several heat receivers, each associated with its relative burner, enables the thermal efficiency to be increased by virtue of direct heat transfer between the hot combustion gases and the walls of the cooking utensil.
- Further advantages of the invention include: a) a wider range of utilization of radiant burners, the usual main drawback of which is that they operate correctly only within a narrow range of gas throughput, and b) enabling the number of cooking points 1 to be reduced when these burners are used in cooking hobs.
- the invention also extends to embodiments in which the radiant burner comprises three or more chambers, In that case, more than one electronically controlled valve or cock can be used.
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Gas Burners (AREA)
Description
- The present invention relates to an atmospheric gas burner of radiant type in accordance with the introduction to the accompanying claim 1 and known from
EP-A-109 1176 . - Atmospheric gas burners of radiant type are known comprising a porous refractory ceramic element (with or without catalyst) closing a chamber into which the air/gas mixture is fed through an injector, in which the gas (the variable throughput of which is controlled by a valve operated by a knob) acts as the vector fluid, i.e. for drawing-in the combustion air.
- The burner conceived in this manner is located at a distance below a profiled or non-profiled glass ceramic plate acting as a heat receiver. An example of a burner of thus type is described in a previous utility model in the name of the same applicant.
- The burner of the prior art is not always able to provide the required performance. This is the case for example when saucepans of considerably different diameter or perimeter are required to be positioned on one and the same burner (of given dimensions). If the burner is sized for the smaller saucepan, cooking requires a much longer time if the larger saucepan is used instead (even if the burner is used at its maximum thermal power). If the burner is sized for the larger saucepan, using the smaller saucepan results in considerable energy wastage even if the burner is operated at low power.
- An example of this situation is that of a fish-kettle (representing the larger pan) and a frying pan occupying a surface area of one half that of the fish-kettle.
- The object of the present invention is to provide a burner able to satisfy different thermal requirements determined by the bearing dimensions of the cooking utensil, in a simple and economical manner.
- This object is met by the features of the characterising clause of claim 1.
- The invention will be more apparent from the ensuing detailed description provided by way of example and given with reference to the accompanying drawings, in which:
-
Figure 1 is a schematic plan view of a cooking appliance with three cooking positions; -
Figure 2 is an exploded perspective view of one of the cooking positions of the appliance ofFigure 1 , but omitting the glass ceramic plate acting as the heat receiver; -
Figure 3 is a schematic vertical section through a cooking position of the appliance ofFigures 1 and 2 ; -
Figure 4 is an exploded perspective view of a different embodiment of a cooking position. - With reference to
Figures 1-3 , the cooking appliance represented presents three cooking positions, which can be different or equal to each other and are indicated by 1. It comprises (seeFigure 3 in particular) a glass ceramic flat element or plate 2 on which the cooking utensil rests. In this specific case the plate 2 is supported by a metal spacer means 3 in front of a burner indicated overall by 4. The burner comprises a discoidalcentral part 5 of porous ceramic material and a circularannular part 6 also of porous ceramic material, having an inner diameter substantially equal to the outer diameter of the discoidalcentral part 5. According to a variant the twoparts - Whether the arrangement comprises two
parts common base wall 10. The discoidal central part 5 (or the corresponding region in the one-piece arrangement) defines, with the inner cylindrical wall 9 and thebase wall 10, acylindrical chamber 11. - The annular part 6 (or the corresponding region of the one-piece arrangement) defines, together with the inner cylindrical wall 9, the outer cylindrical wall 8 and the
base wall 10, anannular chamber 12. - The inner
cylindrical chamber 11 is connected to aconduit 13, which passes through theannular chamber 12 and carries aconventional injector 14 for the gas which, by the venturi effect, draws the combustion air throughintake apertures 15 present in theconduit 13. - To the outer
annular chamber 12 there is connected asimilar injector 16 present in aconduit 17 provided with combustion air intake apertures. - The injectors of the two chambers are connected by
pipes exit cock 20 of known type connected to the gas source and controlled by one and thesame knob 21 to feed gas to theinner chamber 11 from its minimum to its maximum value, and then, by rotating the said knob, to feed gas to theannular chamber 12, for example from its maximum to its minimum value, while feeding gas at maximum value to theinner chamber 11. If only that part of the burner corresponding to thechamber 11 is to be used (for cooking), thecock 20 is opened within a first adjustment range by which gas is controlledly fed to only that chamber. Flameless combustion of the air/gas mixture passing through the porousceramic mass 5 covering thechamber 11 is triggered in known traditional manner. If the situation requires it, by operating the same cock with further rotation of the relative knob, the air/gas mixture is made to also controlledly enter the outerannular chamber 12, and is ignited by passage through the porousceramic mass 6 covering thechamber 12, while thechamber 11 is fed at its maximum value, with the result that the entire porous mass (disc 5 plus ring 6) intervenes in heating the glass ceramic plate 2. - The arrangement of
Figure 4 , in which parts equal or corresponding to those ofFigures 1-3 are indicated by the same reference numerals plus the letter A, comprises two partly complementaryadjacent chambers discoidal part 5A of porous ceramic material and by apart 6A of shape matching that of theunderlying chamber 12A. Again in this case gas flows to the two chambers via a cock controlled by the same knob. The twoparts - The heat receiver, represented by glass ceramic discs in the embodiment of
Figures 1-3 , is in this case shaped relatively. - In the two embodiments the heat receiver can be a single plate, for example rectangular, common to all the burners used, although the fact of having several heat receivers, each associated with its relative burner, enables the thermal efficiency to be increased by virtue of direct heat transfer between the hot combustion gases and the walls of the cooking utensil.
- Further advantages of the invention include: a) a wider range of utilization of radiant burners, the usual main drawback of which is that they operate correctly only within a narrow range of gas throughput, and b) enabling the number of cooking points 1 to be reduced when these burners are used in cooking hobs. The invention also extends to embodiments in which the radiant burner comprises three or more chambers, In that case, more than one electronically controlled valve or cock can be used.
Claims (5)
- A burner of radiant atmospheric type, comprising a porous ceramic element positioned to close a first chamber (11, 11A) into which a gas/air mixture is fed, and at least a second chamber (12, 12A) adjacent to the first, both chambers being closed by the porous ceramic element (5, 6; 5A, 6A), characterised in that the feed to said two chambers takes place via a valve means (20) controlled by a single knob (21), wherein during a first part of the travel of its single knob (21), the valve member (20) controls the gas feed to the first chamber from a minimum to a maximum value, whereas during a second part of said travel it controls the gas feed to the second chamber and allows feed to the first chamber at maximum value.
- A burner as claimed in claim 1, wherein the porous ceramic element is common to the two chambers (11, 11A and 12, 12A).
- A burner as claimed in claim 1, wherein the porous ceramic element (5, 5A; 6, 6A) is separate for each of said chambers (11, 11A and 12, 12A).
- A burner as claimed in one or more of the preceding claims, wherein the two chambers (11, 12) are concentric.
- A burner as claimed in one or more of claims from 1 to 4, wherein the two chambers (11A, 12A) are side by side or adjacent.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
IT2001MI000247U ITMI20010247U1 (en) | 2001-05-03 | 2001-05-03 | RADIANT GAS ATMOSPHERIC BURNER |
ITMI20010247U | 2001-05-03 |
Publications (3)
Publication Number | Publication Date |
---|---|
EP1255081A2 EP1255081A2 (en) | 2002-11-06 |
EP1255081A3 EP1255081A3 (en) | 2006-11-22 |
EP1255081B1 true EP1255081B1 (en) | 2008-11-19 |
Family
ID=11446791
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP02007379A Expired - Lifetime EP1255081B1 (en) | 2001-05-03 | 2002-04-09 | Atmospheric gas burner of radiant type |
Country Status (5)
Country | Link |
---|---|
US (1) | US20020164553A1 (en) |
EP (1) | EP1255081B1 (en) |
DE (1) | DE60229897D1 (en) |
ES (1) | ES2317960T3 (en) |
IT (1) | ITMI20010247U1 (en) |
Families Citing this family (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2004051145A1 (en) * | 2002-11-29 | 2004-06-17 | Lg Electronics Inc. | Gas radiation oven range |
WO2005100856A1 (en) * | 2004-04-06 | 2005-10-27 | Tiax Llc | Burner apparatus |
ITTO20050685A1 (en) * | 2005-09-30 | 2007-04-01 | Indesit Co Spa | COOKTOP WITH GAS BURNER INCLUDING A SEMIPERMEABLE ELEMENT |
US7721726B2 (en) * | 2006-01-03 | 2010-05-25 | Lg Electronics Inc. | Gas radiation burner |
KR101064050B1 (en) * | 2008-07-29 | 2011-09-08 | 엘지전자 주식회사 | Burner assembly and cooking apparatus including the same |
US9557063B2 (en) * | 2013-11-22 | 2017-01-31 | Haier Us Appliance Solutions, Inc. | Burner assembly for cooktop appliance and method for operating same |
KR101617499B1 (en) | 2013-12-26 | 2016-05-02 | 엘지전자 주식회사 | Cooking appliance and burner unit |
KR101573989B1 (en) * | 2013-12-26 | 2015-12-02 | 엘지전자 주식회사 | Cooking appliance and burner unit |
CN109058991A (en) * | 2018-08-15 | 2018-12-21 | 中山市新帝电器制造有限公司 | A kind of infrared burner |
Family Cites Families (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
ES2018441A6 (en) * | 1989-12-11 | 1991-04-01 | Catalana Gas Sa | Improvements in burners for glass-ceramic cooker top. |
IT1250610B (en) * | 1991-07-01 | 1995-04-21 | Smeg Spa | INFRARED GAS BURNERS FOR GLASS-CERAMIC COOKING HOBS |
EP1091176A1 (en) * | 1999-10-05 | 2001-04-11 | A.C. di Amati Carlo & C.S.a.s. | Burner device for hobs of gas cookers |
-
2001
- 2001-05-03 IT IT2001MI000247U patent/ITMI20010247U1/en unknown
-
2002
- 2002-04-09 ES ES02007379T patent/ES2317960T3/en not_active Expired - Lifetime
- 2002-04-09 DE DE60229897T patent/DE60229897D1/en not_active Expired - Lifetime
- 2002-04-09 EP EP02007379A patent/EP1255081B1/en not_active Expired - Lifetime
- 2002-04-26 US US10/133,927 patent/US20020164553A1/en not_active Abandoned
Also Published As
Publication number | Publication date |
---|---|
ITMI20010247U1 (en) | 2002-11-04 |
EP1255081A3 (en) | 2006-11-22 |
ES2317960T3 (en) | 2009-05-01 |
US20020164553A1 (en) | 2002-11-07 |
EP1255081A2 (en) | 2002-11-06 |
ITMI20010247V0 (en) | 2001-05-03 |
DE60229897D1 (en) | 2009-01-02 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
US4622946A (en) | Jet impingement/radiation gas-fired cooking range | |
EP1838997B1 (en) | Gas burner for cooking appliances | |
US7291009B2 (en) | Dual stacked gas burner and a venturi for improving burner operation | |
US8302593B2 (en) | Gas burner assembly including inner and outer burners and methods for implementing same | |
US3592180A (en) | Gas burner device | |
US6322354B1 (en) | Stacked dual gas burner | |
EP0903538A1 (en) | Gas burner | |
US10480794B2 (en) | Cooktop appliance with a gas burner assembly | |
US10753617B2 (en) | Cooktop appliance with a gas burner assembly | |
US10429075B2 (en) | Cooktop appliance and methods of operation | |
EP1255081B1 (en) | Atmospheric gas burner of radiant type | |
US20120282560A1 (en) | Offset igniter assembly | |
US9423138B2 (en) | Gas cooktop with radiant burner arrangement | |
EP1459012B1 (en) | Gas burner with several flame sectors | |
US7802567B2 (en) | Device and method for a gas burner | |
US20190017709A1 (en) | Cooktop appliance with a gas burner assembly | |
US20030101980A1 (en) | Gas heating appliance | |
US6435173B1 (en) | Combined burner and grate | |
WO2022033611A1 (en) | Cooktop appliance having gas burner assembly having heat partition | |
US20030190573A1 (en) | Burner with tangential gas inlet | |
US1735654A (en) | Gas stove or range | |
CN112178640A (en) | Infrared burner | |
CN205678670U (en) | A kind of disjunctor burner and combustion furnace | |
US11454393B2 (en) | Gas burner with an offset flame port array | |
EP1091176A1 (en) | Burner device for hobs of gas cookers |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
PUAI | Public reference made under article 153(3) epc to a published international application that has entered the european phase |
Free format text: ORIGINAL CODE: 0009012 |
|
AK | Designated contracting states |
Kind code of ref document: A2 Designated state(s): AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE TR |
|
AX | Request for extension of the european patent |
Free format text: AL;LT;LV;MK;RO;SI |
|
PUAL | Search report despatched |
Free format text: ORIGINAL CODE: 0009013 |
|
AK | Designated contracting states |
Kind code of ref document: A3 Designated state(s): AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE TR |
|
AX | Request for extension of the european patent |
Extension state: AL LT LV MK RO SI |
|
17P | Request for examination filed |
Effective date: 20070503 |
|
AKX | Designation fees paid |
Designated state(s): DE ES FR GB IT |
|
17Q | First examination report despatched |
Effective date: 20070920 |
|
GRAP | Despatch of communication of intention to grant a patent |
Free format text: ORIGINAL CODE: EPIDOSNIGR1 |
|
GRAS | Grant fee paid |
Free format text: ORIGINAL CODE: EPIDOSNIGR3 |
|
GRAA | (expected) grant |
Free format text: ORIGINAL CODE: 0009210 |
|
AK | Designated contracting states |
Kind code of ref document: B1 Designated state(s): DE ES FR GB IT |
|
REG | Reference to a national code |
Ref country code: GB Ref legal event code: FG4D |
|
REF | Corresponds to: |
Ref document number: 60229897 Country of ref document: DE Date of ref document: 20090102 Kind code of ref document: P |
|
REG | Reference to a national code |
Ref country code: ES Ref legal event code: FG2A Ref document number: 2317960 Country of ref document: ES Kind code of ref document: T3 |
|
PLBE | No opposition filed within time limit |
Free format text: ORIGINAL CODE: 0009261 |
|
STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT |
|
26N | No opposition filed |
Effective date: 20090820 |
|
REG | Reference to a national code |
Ref country code: FR Ref legal event code: PLFP Year of fee payment: 15 |
|
PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: ES Payment date: 20160311 Year of fee payment: 15 |
|
PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: FR Payment date: 20160309 Year of fee payment: 15 |
|
PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: GB Payment date: 20160406 Year of fee payment: 15 Ref country code: DE Payment date: 20160405 Year of fee payment: 15 |
|
PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: IT Payment date: 20160418 Year of fee payment: 15 |
|
REG | Reference to a national code |
Ref country code: DE Ref legal event code: R119 Ref document number: 60229897 Country of ref document: DE |
|
GBPC | Gb: european patent ceased through non-payment of renewal fee |
Effective date: 20170409 |
|
REG | Reference to a national code |
Ref country code: FR Ref legal event code: ST Effective date: 20171229 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: FR Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20170502 Ref country code: DE Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20171103 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: GB Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20170409 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: IT Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20170409 |
|
REG | Reference to a national code |
Ref country code: ES Ref legal event code: FD2A Effective date: 20180629 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: ES Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20170410 |