EP3748230A1 - Base part for a gas burner assembly - Google Patents

Base part for a gas burner assembly Download PDF

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Publication number
EP3748230A1
EP3748230A1 EP19177836.4A EP19177836A EP3748230A1 EP 3748230 A1 EP3748230 A1 EP 3748230A1 EP 19177836 A EP19177836 A EP 19177836A EP 3748230 A1 EP3748230 A1 EP 3748230A1
Authority
EP
European Patent Office
Prior art keywords
base part
gas
burner
shell
burner assembly
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
EP19177836.4A
Other languages
German (de)
French (fr)
Other versions
EP3748230B1 (en
Inventor
Ferdinando VIVACQUA
Riccardo EUSEPI
Areli URIBE PORTUGAL
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 Appliances AB
Original Assignee
Electrolux Appliances AB
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 Appliances AB filed Critical Electrolux Appliances AB
Priority to EP19177836.4A priority Critical patent/EP3748230B1/en
Priority to ES19177836T priority patent/ES2981446T3/en
Publication of EP3748230A1 publication Critical patent/EP3748230A1/en
Application granted granted Critical
Publication of EP3748230B1 publication Critical patent/EP3748230B1/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23D—BURNERS
    • F23D14/00—Burners for combustion of a gas, e.g. of a gas stored under pressure as a liquid
    • F23D14/02—Premix gas burners, i.e. in which gaseous fuel is mixed with combustion air upstream of the combustion zone
    • F23D14/04—Premix gas burners, i.e. in which gaseous fuel is mixed with combustion air upstream of the combustion zone induction type, e.g. Bunsen burner
    • F23D14/06—Premix gas burners, i.e. in which gaseous fuel is mixed with combustion air upstream of the combustion zone induction type, e.g. Bunsen burner with radial outlets at the burner head
    • F23D14/065—Premix gas burners, i.e. in which gaseous fuel is mixed with combustion air upstream of the combustion zone induction type, e.g. Bunsen burner with radial outlets at the burner head with injector axis inclined to the burner head axis
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23D—BURNERS
    • F23D14/00—Burners for combustion of a gas, e.g. of a gas stored under pressure as a liquid
    • F23D14/46—Details
    • F23D14/62—Mixing devices; Mixing tubes
    • F23D14/64—Mixing devices; Mixing tubes with injectors
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23D—BURNERS
    • F23D2900/00—Special features of, or arrangements for burners using fluid fuels or solid fuels suspended in a carrier gas
    • F23D2900/14—Special features of gas burners
    • F23D2900/14062—Special features of gas burners for cooking ranges having multiple flame rings
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23D—BURNERS
    • F23D2900/00—Special features of, or arrangements for burners using fluid fuels or solid fuels suspended in a carrier gas
    • F23D2900/14—Special features of gas burners
    • F23D2900/14063—Special features of gas burners for cooking ranges having one flame ring fed by multiple venturis

Definitions

  • the present invention relates to a base part for a gas burner assembly. Further, the present invention relates to a gas burner assembly for a gas cooking appliance. Moreover, the present invention relates to a gas cooking appliance, in particular a domestic gas cooking hob.
  • Conventional gas burner assemblies often include a base part acting as a holder for an injector.
  • base parts have a rectangular cross section and forming a kind of shell.
  • base parts are over-dimensioned and require a lot of material. Further the weight of the gas burner assembly with the base part is relative high.
  • manufacturing of such base parts and gas burner assemblies is very complex.
  • the object is achieved by the base for the gas burner assembly according to claim 1.
  • a base part for a gas burner assembly of a gas cooking appliance, in particular of a domestic gas cooking hob, is provided, wherein:
  • the core of the present invention is the shape of the shell.
  • the inner side of the shell is formed as a circumferential surface of a truncated cone, wherein the at least one injector is arranged in the deepest position of said shell.
  • This allows a very smooth inner surface around the injector.
  • the smooth surface around the injector improves the composition and the flow conditions of the gas-air mixture within the shell. Further, the smooth surface of the shell is easy to clean.
  • the base part includes at least one gas inlet arranged beneath the shell, wherein preferably said gas inlet is arranged in a lower and/or outer portion of the base part.
  • the base part includes at least one gas channel, in particular a horizontal gas channel, interconnected between the gas inlet and the injector.
  • the inner side of the shell of the base part may be formed as smooth surface without any bends.
  • one or more pockets may be formed in the upper portion of the shell of the base part, wherein said pocket is provided for receiving an element of a burner crown.
  • the base part may include at least one pin, preferably at least two or at least three pins, for fixing and/or aligning said base part on a bottom of the gas cooking appliance.
  • said pin or pins, respectively, extend downwards.
  • the shell of the base part is formed as an integrated part of a work plate of the gas cooking appliance.
  • the shell of the base part is embossed in the work plate of the gas cooking appliance.
  • the shell of the base part is a deformation in the work plate of the gas cooking appliance.
  • the shell of the base part may be obtained by forging the sheet for the work plate. Further, the shell of the base part may be obtained by cold stamping the sheet for the work plate. Alternatively, the shell of the base part may be a separate component fixed to the work plate by suitable fastening elements.
  • the shell formed as integrated part of the work plate reduces the number of components of the gas burner assembly.
  • the present invention relates to a gas burner assembly for a gas cooking appliance, wherein said gas burner assembly comprises at least one base part mentioned above.
  • the gas burner assembly comprises an intermediate part arranged above the base part, wherein preferably said intermediate part includes a vertical Venturi pipe in its central portion, so that the Venturi pipe is arranged above the injector.
  • the gas burner assembly may comprise a burner crown arranged above the intermediate part, wherein the burner crown includes a plurality of flame ports, and wherein preferably a prechamber is formed between the burner crown and the intermediate part.
  • the gas burner assembly may comprise at least one burner cap arranged above the burner crown and covering at least one chamber of said burner crown.
  • the burner crown includes an inner central chamber and an outer annular chamber, wherein the inner central chamber is covered by an inner burner cap and the outer annular chamber is covered by an outer burner cap.
  • a plurality of inner flame ports is formed in a circumferential side wall of the inner central chamber, wherein preferably the inner burner cap is formed as a circular disk.
  • a plurality of outer flame ports may be formed in an inner and/or outer circumferential side wall of the outer annular chamber, wherein preferably the outer burner cap is formed as a circular ring.
  • the plurality of outer flame ports is formed in the outer circumferential side wall of the outer annular chamber, wherein preferably the outer burner cap is formed as the circular ring and inclined in radial direction, so that the level of the outer burner cap rises from inside to outside.
  • an upper side of the base part is open, so that the gas burner assembly takes primary fresh air from outside of the work plate.
  • the present invention relates to a gas cooking appliance, in particular a domestic gas cooking hob, wherein the gas cooking appliance comprises at least one gas burner assembly mentioned above.
  • FIG 1 illustrates a schematic sectional side view of a gas burner assembly 10 according to a first embodiment of the present invention.
  • the gas burner assembly 10 is provided for a gas cooking appliance, in particular for a domestic gas cooking hob.
  • the gas burner assembly 10 comprises a base part 12, an intermediate part 14, a burner crown 16, an outer burner cap 18 and an inner burner cap 20.
  • the intermediate part 14 is arranged above the base part 12.
  • the burner crown 16 is arranged above the intermediate part 14.
  • the outer burner cap 18 and the inner burner cap 20 are arranged on the burner crown 16.
  • the outer burner cap 18 is formed as a circular ring and inclined in radial direction, wherein the level of the outer burner cap 18 rises from inside to outside.
  • the inner burner cap 20 is formed as a circular disk.
  • the base part 12 includes a gas inlet 22, a shell 24 and a horizontal gas channel 28.
  • the gas channel 28 is only provided for delivering gas up to the level of the injector 26.
  • An external gas supply tube is connectable to the gas inlet 22 forming the entrance of the gas channel 28.
  • the shell 24 has an open top side.
  • An injector 26 is arranged in the centre of the shell 24, wherein said centre is the deepest position of the shell 24.
  • the gas inlet 22 is arranged in a lower and outer portion of the base part 12.
  • the horizontal gas channel 28 is interconnected between the gas inlet 22 and the centre of the shell 24, wherein the injector 26 is arranged.
  • the base part 12 includes a pin 42 for fixing and/or aligning said base part 12 on a bottom 46 of the gas cooking appliance. In this example, said pin 42 extends downwards.
  • the inner side of the shell 24 is formed as a circumferential surface of a truncated cone.
  • the inner surface of the shell 24 is very smooth. Said smooth surface allows that the shell 24 and the base part 12 are easy to clean. In particular, the smooth surface around the injector 26 improves the composition and the flow conditions of the gas-air mixture within the shell 24.
  • the outer side of the shell 24 is formed as a circumferential surface of a truncated cone.
  • the wall thickness of the shell 24 may be relative small resulting in low costs of material.
  • the intermediate part 14 is arranged above the base part 12.
  • a vertical Venturi pipe 30 is formed in the centre of said intermediate part 14.
  • the vertical Venturi pipe 30 is arranged above the injector 26.
  • the burner crown 16 is arranged above the intermediate part 14.
  • a prechamber 32 is formed between the intermediate part 14 and the burner crown 16. The height of said prechamber 32 increases radially, from inside to outside.
  • the burner crown 16 includes an inner central chamber 34 and an outer annular chamber 36 connected to the prechamber 32.
  • the burner crown 16 includes a plurality of inner flame ports 38 and a plurality of outer flame ports 40.
  • the inner flame ports 38 are formed in a circumferential side wall of the inner central chamber 34.
  • the outer flame ports 40 are formed in a circumferential side wall of the outer annular chamber 36.
  • an outer ring of flames encloses the outer annular chamber 36, while an inner ring of flames is arranged between the inner central chamber 34 and the outer annular chamber 36.
  • the inner central chamber 34 is covered by the inner burner cap 20, while the outer annular chamber 36 is covered by the outer burner cap 18 formed as circular ring.
  • the outer burner cap 18 and the inner burner cap 20 are arranged concentrically to each other. Substantially, the outer burner cap 18 and the inner burner cap 20 are arranged at the same level.
  • the outer ring of flames encloses the outer burner cap 18, while the inner ring of flames is arranged between the inner burner cap 20 and the outer burner cap 18.
  • the gas burner assembly 10 is arranged within a cut-out of a work plate 48 of the gas cooking hob.
  • the intermediate part 14, the burner crown 16, the outer burner cap 18 and the inner burner cap 20 are arranged above the base part 12 which in turn is arranged within the cut-out of the work plate 48.
  • the base part 12 is substantially arranged beneath the work plate 48, the intermediate part 14 and the burner crown 16.
  • the outer burner cap 18 and the inner burner cap 20 are supported by the base part 12.
  • the intermediate part 14 and the burner crown 16 are joined.
  • the outer burner cap 18 and the inner burner cap 20 are arranged above the burner crown 16.
  • the burner crown 16 is supported by the base part 12 and fixed through the cut-out of the work plate 48.
  • the base part 12 includes a number of screw holes 50 for fastening said base part on the work plate 48. In this example, the base part 12 includes four screw holes 50.
  • FIG 2 illustrates a schematic perspective view of the base part 12 of the gas burner assembly 10 according to the first embodiment of the present invention.
  • the base part 12 includes the gas inlet 22, the shell 24 with the open top side, the horizontal gas channel 28 and the pin 42.
  • the injector 26 is arranged in the centre of the shell 24, which is the deepest position of the shell 24.
  • the gas inlet 22 is arranged in the lower and outer portion of the shell 24.
  • the horizontal gas channel 28 is interconnected between the gas inlet 22 and the centre of the shell 24.
  • the pin 42 is provided for fixing and/or aligning the base part 12 on the bottom 46 of the gas cooking appliance.
  • at least three pins 42 for fixing and/or aligning the base part 12 on the bottom of the gas cooking appliance are provided. In particular, said pins 42 extend downwards.
  • the inner side of the shell 24 is formed as a circumferential surface of a truncated cone.
  • the smooth surface allows that the shell 24 and the base part 12 are easy to clean. Further, the smooth surface around the injector 26 improves the composition and the flow conditions of the gas-air mixture within the shell 24.
  • the shell 24 of the base part 12 includes pockets 44 in its upper portion for assembling and centring the burner crown 16, the outer burner cap 18 and the inner burner cap 20.
  • the injector 26 withdraws fresh air on the top side of the work plate 48.
  • the gas burner assembly 10 is a top-breather burner.
  • the shell 24 does not have any opening arranged beneath said work plate 48. Thus, the injector 26 cannot suck air from the bottom side of the work plate 48.
  • FIG 3 illustrates a schematic sectional side view of a base part 12 of the gas burner assembly 10 according to a second embodiment of the present invention.
  • the base part 12 of the second embodiment is an integrated part of the work plate 48 of the gas cooking hob.
  • the shell 24 of the base part 12 is a deformation in the work plate 48.
  • the shell 24 of the base part 12 is obtained by embossing the sheet for the work plate 48 or other manufacturing techniques.
  • the shell 24 of the base part 12 is obtained by forging the sheet for the work plate 48.
  • the shell 24 of the base part 12 may be obtained by cold stamping the sheet for the work plate 48. This embodiment reduces the number of components of the gas burner assembly 10.
  • the base part 12 includes the gas inlet 22, the shell 24 with the open top side, the horizontal gas channel 28 and the gas inlet 22.
  • a gas supply tube 52 is inserted into the gas inlet 22.
  • the injector 26 is arranged in the centre of the shell 24. Said centre is the deepest position of the shell 24.
  • the gas inlet 22 is arranged in the lower portion of the shell 24.
  • the horizontal gas channel 28 is interconnected between the gas inlet 22 and the centre of the shell 24.
  • the shell 24 is formed as a circumferential surface of a truncated cone.
  • the shell 24 of the base part 12 may be a separate component and fixed to the work plate 48 by suitable fastening elements.
  • FIG 4 illustrates a schematic sectional side view of the gas burner assembly 10 according to a third embodiment of the present invention.
  • the gas burner assembly 10 comprises the base part 12, the intermediate part 14, the burner crown 16, the outer burner cap 18 and the inner burner cap 20.
  • the intermediate part 14 is arranged above the base part 12, while the burner crown 16 is arranged above the intermediate part 14.
  • the outer burner cap 18 and the inner burner cap 20 are arranged on the burner crown 16.
  • the outer burner cap 18 is formed as circular ring and inclined in radial direction, wherein the level of the outer burner cap 18 rises from inside to outside.
  • the inner burner cap 20 is formed as circular disk.
  • the base part 12 includes a first gas inlet 22A and a second gas inlet 22B, wherein only the first gas inlet 22A is explicitly shown in FIGF 4. Further, the base part 12 includes the shell 24, a first horizontal gas channel 28A and a second horizontal gas channel 28B. Three injectors 26A and 26B are arranged in the centre of the shell 24, wherein said centre is the deepest position of the shell 24. The injectors 26A and 26B are arranged in series. Two outer injectors 26A are supplied by the first horizontal gas channel 28A.
  • the first horizontal gas channel 28A includes the first gas inlet 22A.
  • the second horizontal gas channel 28B is arranged above and perpendicular to the first horizontal gas channel 28A.
  • the second horizontal gas channel 28B includes the second gas inlet 22B and supplies an inner injector 26B.
  • the gas channels 28A and 28B are only provided for delivering gas up to the level of the injectors 26A and 26B.
  • External gas supply tubes are connectable to the gas inlets 22A and 22B.
  • the both gas inlets 22A and 22B allow a separate control of the gas supplies for the inner injector 26B on the one hand and the outer injectors 26A on the other hand.
  • the heat distribution above the gas burner assembly 10 may be adjusted.
  • the intermediate part 14 is arranged above the base part 12.
  • Three vertical Venturi pipes 30 are formed in the centre of said intermediate part 14, wherein each vertical Venturi pipe 30 is arranged above one of the injectors 26A and 26B.
  • the burner crown 16 is arranged above the intermediate part 14.
  • the prechamber 32 is formed between the intermediate part 14 and the burner crown 16. The height of said prechamber 32 increases radially, from inside to outside.
  • the burner crown 16 includes the inner central chamber and the outer annular chamber connected to the prechamber 32.
  • the burner crown 16 includes the plurality of inner and outer flame ports 40.
  • the inner central chamber 34 is covered by the inner burner cap 20, while the outer annular chamber 36 is covered by the outer burner cap 18 formed as circular ring.
  • the outer burner cap 18 and the inner burner cap 20 are arranged concentrically to each other. Preferably, the outer burner cap 18 and the inner burner cap 20 are arranged at the same level.
  • FIG 5 illustrates a schematic perspective view of a base part 12 for the gas burner assembly 10 according to the third embodiment of the present invention.
  • the injectors 26A and 26B are arranged in the centre of the shell 24.
  • the centre is the deepest position of the shell 24.
  • the gas inlets 22A and 22B are arranged in the lower portion of the shell 24 and arranged perpendicular to each other.
  • the first gas inlet 22A on the right hand side in FIG 5 supplies the inner injector 26B, while the second gas inlet 22B on the left hand side in FIG 5 supplies the both outer injectors 26A.
  • the shell 24 of the base part 12 includes pockets 44 in its upper portion for assembling and centring the burner crown 16, the outer burner cap 18 and/or the inner burner cap 20.
  • the base part 12 includes screw holes 50 for fastening said base part on the work plate 48.
  • FIG 6 illustrates a schematic perspective view of the gas burner assembly 10 according to the third embodiment of the present invention.
  • the horizontal gas channels 28A and 28B with the gas inlets 22A and 22B are arranged in the lower portion of the shell 24.
  • the horizontal gas channels 28A and 28B are arranged perpendicular to each other.
  • the first horizontal gas channel 28A on the right hand side in FIG 6 supplies the inner injector 26B, while the second horizontal gas channel 28B on the left hand side in FIG 6 supplies the both outer injectors 26A.
  • External gas supply tubes are connectable to the gas inlets 22A and 22B of the horizontal gas channels 28A and 28B, respectively.
  • the both horizontal gas channels 28A and 28B allow a separate control of the gas supplies for the inner injector 26B on the one hand and the outer injectors 26A on the other hand.
  • a fine tuning of the heat above the gas burner assembly 10 is possible. Further, the heat distribution above the gas burner assembly 10 may be adjusted.

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Gas Burners (AREA)
  • Baking, Grill, Roasting (AREA)

Abstract

The present invention relates to a base part (12) for a gas burner assembly (10) of a gas cooking appliance, in particular of a domestic gas cooking hob. The base part (12) includes a shell (24) with an open top side. The base part (12) includes and/or supports at least one injector (26; 26A, 26B) arranged in the central and deepest position of the shell (24). The inner side of the shell (24) is formed as a circumferential surface of a truncated cone. Further, the present invention relates to a gas burner assembly (10). Moreover, present invention relates to a gas cooking appliance, in particular a domestic gas cooking hob.

Description

  • The present invention relates to a base part for a gas burner assembly. Further, the present invention relates to a gas burner assembly for a gas cooking appliance. Moreover, the present invention relates to a gas cooking appliance, in particular a domestic gas cooking hob.
  • Conventional gas burner assemblies often include a base part acting as a holder for an injector. Usually, such base parts have a rectangular cross section and forming a kind of shell. However, such base parts are over-dimensioned and require a lot of material. Further the weight of the gas burner assembly with the base part is relative high. Moreover, the manufacturing of such base parts and gas burner assemblies is very complex.
  • It is an object of the present invention to provide a base part for a gas burner assembly, which allows improved flow conditions of the gas-air mixture by low complexity.
  • The object is achieved by the base for the gas burner assembly according to claim 1.
  • According to the present invention a base part for a gas burner assembly of a gas cooking appliance, in particular of a domestic gas cooking hob, is provided, wherein:
    • the base part includes a shell with an open top side,
    • the base part includes and/or supports at least one injector arranged in the central and deepest position of the shell, and
    • the inner side of the shell is formed as a circumferential surface of a truncated cone.
  • The core of the present invention is the shape of the shell. The inner side of the shell is formed as a circumferential surface of a truncated cone, wherein the at least one injector is arranged in the deepest position of said shell. This allows a very smooth inner surface around the injector. In particular, the smooth surface around the injector improves the composition and the flow conditions of the gas-air mixture within the shell. Further, the smooth surface of the shell is easy to clean.
  • In particular, the base part includes at least one gas inlet arranged beneath the shell, wherein preferably said gas inlet is arranged in a lower and/or outer portion of the base part.
  • Preferably, the base part includes at least one gas channel, in particular a horizontal gas channel, interconnected between the gas inlet and the injector.
  • Further, the inner side of the shell of the base part may be formed as smooth surface without any bends.
  • Moreover, one or more pockets may be formed in the upper portion of the shell of the base part, wherein said pocket is provided for receiving an element of a burner crown.
  • Additionally, the base part may include at least one pin, preferably at least two or at least three pins, for fixing and/or aligning said base part on a bottom of the gas cooking appliance. In particular, said pin or pins, respectively, extend downwards.
  • According to another embodiment of the present invention, the shell of the base part is formed as an integrated part of a work plate of the gas cooking appliance. Preferably, the shell of the base part is embossed in the work plate of the gas cooking appliance. In particular, the shell of the base part is a deformation in the work plate of the gas cooking appliance. The shell of the base part may be obtained by forging the sheet for the work plate. Further, the shell of the base part may be obtained by cold stamping the sheet for the work plate. Alternatively, the shell of the base part may be a separate component fixed to the work plate by suitable fastening elements. The shell formed as integrated part of the work plate reduces the number of components of the gas burner assembly.
  • Further, the present invention relates to a gas burner assembly for a gas cooking appliance, wherein said gas burner assembly comprises at least one base part mentioned above.
  • In particular, the gas burner assembly comprises an intermediate part arranged above the base part, wherein preferably said intermediate part includes a vertical Venturi pipe in its central portion, so that the Venturi pipe is arranged above the injector.
  • Additionally, the gas burner assembly may comprise a burner crown arranged above the intermediate part, wherein the burner crown includes a plurality of flame ports, and wherein preferably a prechamber is formed between the burner crown and the intermediate part.
  • Further, the gas burner assembly may comprise at least one burner cap arranged above the burner crown and covering at least one chamber of said burner crown.
  • According to a preferred embodiment, the burner crown includes an inner central chamber and an outer annular chamber, wherein the inner central chamber is covered by an inner burner cap and the outer annular chamber is covered by an outer burner cap.
  • For example, a plurality of inner flame ports is formed in a circumferential side wall of the inner central chamber, wherein preferably the inner burner cap is formed as a circular disk.
  • Additionally, a plurality of outer flame ports may be formed in an inner and/or outer circumferential side wall of the outer annular chamber, wherein preferably the outer burner cap is formed as a circular ring.
  • According to the preferred embodiment, the plurality of outer flame ports is formed in the outer circumferential side wall of the outer annular chamber, wherein preferably the outer burner cap is formed as the circular ring and inclined in radial direction, so that the level of the outer burner cap rises from inside to outside.
  • In particular, an upper side of the base part is open, so that the gas burner assembly takes primary fresh air from outside of the work plate.
  • Further, the present invention relates to a gas cooking appliance, in particular a domestic gas cooking hob, wherein the gas cooking appliance comprises at least one gas burner assembly mentioned above.
  • Novel and inventive features of the present invention are set forth in the appended claims.
  • The present invention will be described in further detail with reference to the drawing, in which
    • FIG 1
    illustrates a schematic sectional side view of a gas burner assembly according to a first embodiment of the present invention,
    FIG 2
    illustrates a schematic perspective view of a base part for the gas burner assembly according to the first embodiment of the present invention,
    FIG 3
    illustrates a schematic sectional side view of a base part of the gas burner assembly according to a second embodiment of the present invention,
    FIG 4
    illustrates a schematic sectional side view of the gas burner assembly according to a third embodiment of the present invention,
    FIG 5
    illustrates a schematic perspective view of a base part for the gas burner assembly according to the third embodiment of the present invention, and
    FIG 6
    illustrates a schematic perspective view of the gas burner assembly according to the third embodiment of the present invention.
  • FIG 1 illustrates a schematic sectional side view of a gas burner assembly 10 according to a first embodiment of the present invention. The gas burner assembly 10 is provided for a gas cooking appliance, in particular for a domestic gas cooking hob.
  • The gas burner assembly 10 comprises a base part 12, an intermediate part 14, a burner crown 16, an outer burner cap 18 and an inner burner cap 20. The intermediate part 14 is arranged above the base part 12. In turn, the burner crown 16 is arranged above the intermediate part 14. The outer burner cap 18 and the inner burner cap 20 are arranged on the burner crown 16. The outer burner cap 18 is formed as a circular ring and inclined in radial direction, wherein the level of the outer burner cap 18 rises from inside to outside. The inner burner cap 20 is formed as a circular disk.
  • The base part 12 includes a gas inlet 22, a shell 24 and a horizontal gas channel 28. The gas channel 28 is only provided for delivering gas up to the level of the injector 26. An external gas supply tube is connectable to the gas inlet 22 forming the entrance of the gas channel 28. The shell 24 has an open top side. An injector 26 is arranged in the centre of the shell 24, wherein said centre is the deepest position of the shell 24. The gas inlet 22 is arranged in a lower and outer portion of the base part 12. The horizontal gas channel 28 is interconnected between the gas inlet 22 and the centre of the shell 24, wherein the injector 26 is arranged. Further, the base part 12 includes a pin 42 for fixing and/or aligning said base part 12 on a bottom 46 of the gas cooking appliance. In this example, said pin 42 extends downwards.
  • The inner side of the shell 24 is formed as a circumferential surface of a truncated cone. The inner surface of the shell 24 is very smooth. Said smooth surface allows that the shell 24 and the base part 12 are easy to clean. In particular, the smooth surface around the injector 26 improves the composition and the flow conditions of the gas-air mixture within the shell 24.
  • Optionally, also the outer side of the shell 24 is formed as a circumferential surface of a truncated cone. In this case, the wall thickness of the shell 24 may be relative small resulting in low costs of material. This allows a light weight construction of the base part 12. Further, this contributes to a lightweight and compact construction of the gas burner assembly 10. The intermediate part 14 is arranged above the base part 12. A vertical Venturi pipe 30 is formed in the centre of said intermediate part 14. Thus, the vertical Venturi pipe 30 is arranged above the injector 26. The burner crown 16 is arranged above the intermediate part 14. A prechamber 32 is formed between the intermediate part 14 and the burner crown 16. The height of said prechamber 32 increases radially, from inside to outside. The burner crown 16 includes an inner central chamber 34 and an outer annular chamber 36 connected to the prechamber 32.
  • The burner crown 16 includes a plurality of inner flame ports 38 and a plurality of outer flame ports 40. The inner flame ports 38 are formed in a circumferential side wall of the inner central chamber 34. The outer flame ports 40 are formed in a circumferential side wall of the outer annular chamber 36. Thus, an outer ring of flames encloses the outer annular chamber 36, while an inner ring of flames is arranged between the inner central chamber 34 and the outer annular chamber 36.
  • The inner central chamber 34 is covered by the inner burner cap 20, while the outer annular chamber 36 is covered by the outer burner cap 18 formed as circular ring. The outer burner cap 18 and the inner burner cap 20 are arranged concentrically to each other. Substantially, the outer burner cap 18 and the inner burner cap 20 are arranged at the same level. The outer ring of flames encloses the outer burner cap 18, while the inner ring of flames is arranged between the inner burner cap 20 and the outer burner cap 18.
  • The gas burner assembly 10 is arranged within a cut-out of a work plate 48 of the gas cooking hob. The intermediate part 14, the burner crown 16, the outer burner cap 18 and the inner burner cap 20 are arranged above the base part 12 which in turn is arranged within the cut-out of the work plate 48. The base part 12 is substantially arranged beneath the work plate 48, the intermediate part 14 and the burner crown 16. The outer burner cap 18 and the inner burner cap 20 are supported by the base part 12. The intermediate part 14 and the burner crown 16 are joined. The outer burner cap 18 and the inner burner cap 20 are arranged above the burner crown 16. The burner crown 16 is supported by the base part 12 and fixed through the cut-out of the work plate 48. The base part 12 includes a number of screw holes 50 for fastening said base part on the work plate 48. In this example, the base part 12 includes four screw holes 50.
  • FIG 2 illustrates a schematic perspective view of the base part 12 of the gas burner assembly 10 according to the first embodiment of the present invention.
  • The base part 12 includes the gas inlet 22, the shell 24 with the open top side, the horizontal gas channel 28 and the pin 42. The injector 26 is arranged in the centre of the shell 24, which is the deepest position of the shell 24. The gas inlet 22 is arranged in the lower and outer portion of the shell 24. The horizontal gas channel 28 is interconnected between the gas inlet 22 and the centre of the shell 24. The pin 42 is provided for fixing and/or aligning the base part 12 on the bottom 46 of the gas cooking appliance. Preferably, at least three pins 42 for fixing and/or aligning the base part 12 on the bottom of the gas cooking appliance are provided. In particular, said pins 42 extend downwards.
  • The inner side of the shell 24 is formed as a circumferential surface of a truncated cone. The smooth surface allows that the shell 24 and the base part 12 are easy to clean. Further, the smooth surface around the injector 26 improves the composition and the flow conditions of the gas-air mixture within the shell 24. Moreover, the shell 24 of the base part 12 includes pockets 44 in its upper portion for assembling and centring the burner crown 16, the outer burner cap 18 and the inner burner cap 20. The injector 26 withdraws fresh air on the top side of the work plate 48. The gas burner assembly 10 is a top-breather burner. In contrast, the shell 24 does not have any opening arranged beneath said work plate 48. Thus, the injector 26 cannot suck air from the bottom side of the work plate 48.
  • FIG 3 illustrates a schematic sectional side view of a base part 12 of the gas burner assembly 10 according to a second embodiment of the present invention.
  • The base part 12 of the second embodiment is an integrated part of the work plate 48 of the gas cooking hob. The shell 24 of the base part 12 is a deformation in the work plate 48. The shell 24 of the base part 12 is obtained by embossing the sheet for the work plate 48 or other manufacturing techniques. For example, the shell 24 of the base part 12 is obtained by forging the sheet for the work plate 48. Further, the shell 24 of the base part 12 may be obtained by cold stamping the sheet for the work plate 48. This embodiment reduces the number of components of the gas burner assembly 10.
  • The base part 12 includes the gas inlet 22, the shell 24 with the open top side, the horizontal gas channel 28 and the gas inlet 22. A gas supply tube 52 is inserted into the gas inlet 22. The injector 26 is arranged in the centre of the shell 24. Said centre is the deepest position of the shell 24. The gas inlet 22 is arranged in the lower portion of the shell 24. The horizontal gas channel 28 is interconnected between the gas inlet 22 and the centre of the shell 24. In this example, the shell 24 is formed as a circumferential surface of a truncated cone. Alternatively, the shell 24 of the base part 12 may be a separate component and fixed to the work plate 48 by suitable fastening elements.
  • FIG 4 illustrates a schematic sectional side view of the gas burner assembly 10 according to a third embodiment of the present invention.
  • The gas burner assembly 10 comprises the base part 12, the intermediate part 14, the burner crown 16, the outer burner cap 18 and the inner burner cap 20. The intermediate part 14 is arranged above the base part 12, while the burner crown 16 is arranged above the intermediate part 14. The outer burner cap 18 and the inner burner cap 20 are arranged on the burner crown 16. The outer burner cap 18 is formed as circular ring and inclined in radial direction, wherein the level of the outer burner cap 18 rises from inside to outside. The inner burner cap 20 is formed as circular disk.
  • The base part 12 includes a first gas inlet 22A and a second gas inlet 22B, wherein only the first gas inlet 22A is explicitly shown in FIGF 4. Further, the base part 12 includes the shell 24, a first horizontal gas channel 28A and a second horizontal gas channel 28B. Three injectors 26A and 26B are arranged in the centre of the shell 24, wherein said centre is the deepest position of the shell 24. The injectors 26A and 26B are arranged in series. Two outer injectors 26A are supplied by the first horizontal gas channel 28A. The first horizontal gas channel 28A includes the first gas inlet 22A. The second horizontal gas channel 28B is arranged above and perpendicular to the first horizontal gas channel 28A. The second horizontal gas channel 28B includes the second gas inlet 22B and supplies an inner injector 26B. The gas channels 28A and 28B are only provided for delivering gas up to the level of the injectors 26A and 26B. External gas supply tubes are connectable to the gas inlets 22A and 22B. The both gas inlets 22A and 22B allow a separate control of the gas supplies for the inner injector 26B on the one hand and the outer injectors 26A on the other hand. The heat distribution above the gas burner assembly 10 may be adjusted.
  • The intermediate part 14 is arranged above the base part 12. Three vertical Venturi pipes 30 are formed in the centre of said intermediate part 14, wherein each vertical Venturi pipe 30 is arranged above one of the injectors 26A and 26B. The burner crown 16 is arranged above the intermediate part 14. The prechamber 32 is formed between the intermediate part 14 and the burner crown 16. The height of said prechamber 32 increases radially, from inside to outside. The burner crown 16 includes the inner central chamber and the outer annular chamber connected to the prechamber 32. The burner crown 16 includes the plurality of inner and outer flame ports 40. The inner central chamber 34 is covered by the inner burner cap 20, while the outer annular chamber 36 is covered by the outer burner cap 18 formed as circular ring. The outer burner cap 18 and the inner burner cap 20 are arranged concentrically to each other. Preferably, the outer burner cap 18 and the inner burner cap 20 are arranged at the same level.
  • FIG 5 illustrates a schematic perspective view of a base part 12 for the gas burner assembly 10 according to the third embodiment of the present invention.
  • The injectors 26A and 26B are arranged in the centre of the shell 24. The centre is the deepest position of the shell 24. The gas inlets 22A and 22B are arranged in the lower portion of the shell 24 and arranged perpendicular to each other. The first gas inlet 22A on the right hand side in FIG 5 supplies the inner injector 26B, while the second gas inlet 22B on the left hand side in FIG 5 supplies the both outer injectors 26A.
  • Further, the shell 24 of the base part 12 includes pockets 44 in its upper portion for assembling and centring the burner crown 16, the outer burner cap 18 and/or the inner burner cap 20. Moreover, the base part 12 includes screw holes 50 for fastening said base part on the work plate 48.
  • FIG 6 illustrates a schematic perspective view of the gas burner assembly 10 according to the third embodiment of the present invention.
  • The horizontal gas channels 28A and 28B with the gas inlets 22A and 22B are arranged in the lower portion of the shell 24. The horizontal gas channels 28A and 28B are arranged perpendicular to each other. The first horizontal gas channel 28A on the right hand side in FIG 6 supplies the inner injector 26B, while the second horizontal gas channel 28B on the left hand side in FIG 6 supplies the both outer injectors 26A. External gas supply tubes are connectable to the gas inlets 22A and 22B of the horizontal gas channels 28A and 28B, respectively. The both horizontal gas channels 28A and 28B allow a separate control of the gas supplies for the inner injector 26B on the one hand and the outer injectors 26A on the other hand. A fine tuning of the heat above the gas burner assembly 10 is possible. Further, the heat distribution above the gas burner assembly 10 may be adjusted.
  • Although illustrative embodiments of the present invention have been described herein with reference to the accompanying drawings, it is to be understood that the present invention is not limited to those precise embodiments, and that various other changes and modifications may be affected therein by one skilled in the art without departing from the scope or spirit of the invention. All such changes and modifications are intended to be included within the scope of the invention as defined by the appended claims.
    • List of reference numerals
    • 10
    gas burner assembly
    12
    base part
    14
    intermediate part
    16
    burner crown
    18
    outer burner cap
    20
    inner burner cap
    22
    gas inlet
    22A
    first gas inlet
    22B
    second gas inlet
    24
    shell
    26
    injector
    26A
    outer injector
    26B
    inner injector
    28
    horizontal gas channel
    28A
    first horizontal gas channel
    28B
    second horizontal gas channel
    30
    vertical Venturi pipe
    32
    prechamber
    34
    inner central chamber
    36
    outer annular chamber
    38
    inner flame port
    40
    outer flame port
    42
    pin
    44
    pocket
    46
    bottom sheet
    48
    work plate
    50
    screw hole
    52
    gas supply tube

Claims (16)

  1. A base part (12) for a gas burner assembly (10) of a gas cooking appliance, in particular of a domestic gas cooking hob, wherein:
    - the base part (12) includes a shell (24) with an open top side,
    - the base part (12) includes and/or supports at least one injector (26; 26A, 26B) arranged in the central and deepest position of the shell (24), and
    - the inner side of the shell (24) is formed as a circumferential surface of a truncated cone.
  2. The base part according to claim 1,
    characterised in that
    the base part (12) includes at least one gas inlet (22; 22A, 22B) arranged beneath the shell (24), wherein preferably said gas inlet (22; 22A, 22B) is arranged in a lower and/or outer portion of the base part (12).
  3. The base part according to claim 2,
    characterised in that
    the base part (12) includes at least one gas channel (28; 28A, 28B), in particular a horizontal gas channel (28; 28A, 28B), interconnected between the gas inlet (22; 22A, 22B) and the injector (26; 26A, 26B).
  4. The base part according to any one of the preceding claims,
    characterised in that
    the inner side of the shell (24) of the base part (12) is formed as a smooth surface.
  5. The base part according to any one of the preceding claims,
    characterised in that
    one or more pockets (44) are formed in the upper portion of the shell (24) of the base part (12), wherein said pocket (44) is provided for receiving an element of a burner crown (16) .
  6. The base part according to any one of the preceding claims,

    characterised in that
    the base part (12) includes at least one pin (42), in particular at least two or at least three pins (42), for fixing and/or aligning said base part (12) on a bottom (46) of the gas cooking appliance, wherein preferably said pin (42) extends downwards.
  7. The base part according to any one of the claims 1 to 5,
    characterised in that
    the shell (24) of the base part (12) is formed as an integrated part of a work plate (48) of the gas cooking appliance, wherein preferably the shell (24) of the base part (12) is embossed in the work plate (48) of the gas cooking appliance.
  8. A gas burner assembly (10) comprising at least one base part (12) according to any one of the preceding claims,
    characterised in that
    the gas burner assembly (10) comprises an intermediate part (14) arranged above the base part (12), wherein preferably said intermediate part (14) includes a vertical Venturi pipe (30) in its central portion, so that the Venturi pipe (30) is arranged above the injector (26; 26A, 26B).
  9. The gas burner assembly according to claim 8,
    characterised in that
    the gas burner assembly (10) comprises a burner crown (16) arranged above the intermediate part (14), wherein the burner crown (16) includes a plurality of flame ports (38, 40), and wherein preferably a prechamber (32) is formed between the burner crown (16) and the intermediate part (14).
  10. The gas burner assembly according to claim 9,
    characterised in that
    the gas burner assembly (10) comprises at least one burner cap (18, 20) arranged above the burner crown (16) and covering at least one chamber (34, 36) of said burner crown (16).
  11. The gas burner assembly according to claim 9 or 10,
    characterised in that
    the burner crown (16) includes an inner central chamber (34) and an outer annular chamber (36), wherein the inner central chamber (34) is covered by an inner burner cap (20) and the outer annular chamber (36) is covered by an outer burner cap (18) .
  12. The gas burner assembly according to claim 11,
    characterised in that
    a plurality of inner flame ports (38) is formed in a circumferential side wall of the inner central chamber (34), wherein preferably the inner burner cap (20) is formed as a circular disk.
  13. The gas burner assembly according to claim 11 or 12,
    characterised in that
    a plurality of outer flame ports (40) is formed in an inner and/or outer circumferential side wall of the outer annular chamber (36), wherein preferably the outer burner cap (18) is formed as a circular ring.
  14. The gas burner assembly according to claim 13,
    characterised in that
    the plurality of outer flame ports (40) is formed in the outer circumferential side wall of the outer annular chamber (36), wherein preferably the outer burner cap (18) is formed as the circular ring and inclined in radial direction, so that the level of the outer burner cap (18) rises from inside to outside.
  15. The gas burner assembly according to any one of the preceding claims,
    characterised in that
    an upper side of the base part (12) is open, so that the gas burner assembly takes primary fresh air from outside of the work plate (48).
  16. A gas cooking appliance, in particular a domestic gas cooking hob, comprising at least one gas burner assembly (10) according to any one of the claims 8 to 15.
EP19177836.4A 2019-06-03 2019-06-03 Gas burner assembly Active EP3748230B1 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
EP19177836.4A EP3748230B1 (en) 2019-06-03 2019-06-03 Gas burner assembly
ES19177836T ES2981446T3 (en) 2019-06-03 2019-06-03 Gas burner assembly

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP19177836.4A EP3748230B1 (en) 2019-06-03 2019-06-03 Gas burner assembly

Publications (2)

Publication Number Publication Date
EP3748230A1 true EP3748230A1 (en) 2020-12-09
EP3748230B1 EP3748230B1 (en) 2024-03-20

Family

ID=66690217

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19177836.4A Active EP3748230B1 (en) 2019-06-03 2019-06-03 Gas burner assembly

Country Status (2)

Country Link
EP (1) EP3748230B1 (en)
ES (1) ES2981446T3 (en)

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6067978A (en) * 1997-08-07 2000-05-30 Schlosser; Erich J. Outdoor cooking apparatus with improved auxiliary gas burner
EP1159565A1 (en) * 1998-12-30 2001-12-05 Ardempisirici Ve Isitici Cihazlar Sanavii A.S. Deep drawn burner mechanism
EP1531304A2 (en) * 2003-11-11 2005-05-18 FAGOR, S.Coop Triple crown gas burner for cooking hobs
EP1616132A1 (en) * 2003-04-18 2006-01-18 So.M.I. Press - Societa' Metalli Iniettati S.p.a. Gas cooker burner of improved type
WO2007068659A1 (en) * 2005-12-15 2007-06-21 Arcelik Anonim Sirketi A cooking device
EP2246619A1 (en) * 2009-04-30 2010-11-03 Electrolux Home Products Corporation N.V. Vertical flame burner

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6067978A (en) * 1997-08-07 2000-05-30 Schlosser; Erich J. Outdoor cooking apparatus with improved auxiliary gas burner
EP1159565A1 (en) * 1998-12-30 2001-12-05 Ardempisirici Ve Isitici Cihazlar Sanavii A.S. Deep drawn burner mechanism
EP1616132A1 (en) * 2003-04-18 2006-01-18 So.M.I. Press - Societa' Metalli Iniettati S.p.a. Gas cooker burner of improved type
EP1531304A2 (en) * 2003-11-11 2005-05-18 FAGOR, S.Coop Triple crown gas burner for cooking hobs
WO2007068659A1 (en) * 2005-12-15 2007-06-21 Arcelik Anonim Sirketi A cooking device
EP2246619A1 (en) * 2009-04-30 2010-11-03 Electrolux Home Products Corporation N.V. Vertical flame burner

Also Published As

Publication number Publication date
ES2981446T3 (en) 2024-10-08
EP3748230B1 (en) 2024-03-20

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