Burner grate, gas cooking hob, gas stove top and gas stove

Patent metadata

Field	Value
Publication number	US-10458657-B2
Application number	US-201214347524-A
Country	US
Kind code	B2
Filing date	Oct 24, 2012
Priority date	Nov 10, 2011
Publication date	Oct 29, 2019
Grant date	Oct 29, 2019

Abstract

The invention is directed to a burner grate ( 7 ), gas cooking hob, gas stove top and gas stove. For obtaining sufficient secondary air supply for inner flame exit ports ( 6 ) of a gas burner ( 4 ) of a gas cooking hob ( 3 ), a burner grate ( 7 ) adapted to be placed over the gas burner ( 4 ) and to support cooking vessels placed on the gas cooking hob ( 3 ) is proposed, which burner grate ( 7 ) comprises a feeder duct ( 12 ) extending from an outer region ( 13 ) to a mid section ( 14 ) thereof, and is adapted and implemented for feeding air towards flames of inner flame exit ports ( 6 ).

First claim

The invention claimed is:

1. A gas stove top comprising:
at least one cooking hob and an air supply unit,
the at least one cooking hob comprising:
a gas burner provided at a top surface of a cooking face; and
two or more burner grates that are placed over the gas burner of the gas cooking hob to support a cooking vessel placed on the burner grates,
wherein the gas burner comprises, viewed from above along a direction perpendicular to said top surface, an outer flame exit port and an inner flame exit port,
wherein each of the burner grates comprises at least one integrated feeder tube having an air inlet opening at a first end of the integrated feeder tube connected to the cooking face and an air outlet opening at a second end of the integrated feeder tube configured to supply air to flames of the inner flame exit port,
wherein each of the burner grates extends from said second end located above a mid section of the gas burner to the first end adjacent said air inlet opening, the mid section being located at a center of the gas burner wherein the inner flame exit port is disposed, the air outlet opening at said second end of the at least one integrated feeder tube being configured to feed air towards the mid section of the gas burner,
wherein the air supply unit is provided under the cooking face and feeds air to the at least one integrated feeder tube of each said burner grate through the air inlet opening,

the air supply unit comprising at least one fan positioned within a supply chamber equally distant from the air inlet opening of the at least one integrated feeder tube of each of the two or more burner grates, the fan feeding air to the supply chamber and to the air inlet opening of the at least one integrated feeder tube of each of the burner grates.

2. The gas stove top according to claim 1 , wherein each of the burner grates comprises a support shaft extending between the air inlet opening of the at least one integrated feeder tube of the respective burner grate and the mid section of the gas burner, said at least one integrated feeder tube going through the support shaft of the respective burner grate.

3. A gas stove top comprising:
at least one gas cooking hob comprising:
a gas burner provided on a top surface of a cooking face; and
two or more burner grates that are placed over the gas burner of the gas cooking hob and support a cooking vessel a placed on the burner grates,

wherein the gas burner comprises, viewed in a direction perpendicular said top surface of the cooking face, an outer flame exit port and an inner flame exit port,
wherein each of the burner grates comprises at least one integrated feeder tube having an air inlet opening at a first end of the integrated feeder tube provided above the cooking face and configured to suck in outside air and an air outlet opening at a second end of the integrated feeder tube configured to feed air to flames of the inner flame exit port,
wherein each of the burner grates extends from a mid section of the gas burner to the air inlet opening, the mid section being located at a center of the gas burner above the inner flame exit port, and the second end of the at least one integrated feeder tube feeds air towards the mid section of the gas burner, and
wherein at least one of the burner grates further comprises at least one fan adapted to generate an airflow in the at least one integrated feeder tube thereof, directed towards the mid section of the gas burner.

4. The gas stove top according to claim 1 , wherein the gas burner comprises several concentric burner crowns respectively comprising the outer flame exit port and the inner flame exit port, wherein the air outlet opening is adapted and located to supply air to flames of the inner flame exit port of an inner one of said crowns.

5. The gas stove top according to claim 1 , wherein the cooking face is connected in or to the gas cooking hob, and the cooking face comprises at least one air supply outlet opening fluidly connected to the air inlet opening of the at least one integrated feeder tube of each of the burner grates.

6. The gas stove top according to claim 1 , the air supply unit comprising the air supply chamber arranged below the cooking face of the gas stove top, wherein at least one supply chamber outlet is connected to the air inlet opening of the at least one integrated feeder tube of each of the burner grates.

7. The gas stove top according to claim 1 , wherein the burner grates are positioned removably on the cooking face of the gas stove top, and an air tight connection between the at least one integrated feeder tube of each of the burner grates and an air supply outlet opening of the air supply unit is automatically established upon putting the burner grates on the cooking face of the gas stove top.

8. The gas stove top according to claim 2 , wherein the at least one integrated feeder tube of each said burner grate is an inner tube of the support shaft thereof.

9. The gas stove top according to claim 3 , wherein the fan is arranged within the integrated feeder tube.

10. The gas stove top according to claim 3 , wherein the integrated feeder tube comprises an inner section and outer section, and the fan is arranged in the outer section of the integrated feeder tube.

11. The gas stove top according to claim 1 , wherein the at least one integrated feeder tube is an inner duct running inside of each of respective the burner grates.

12. The gas stove top according to claim 1 , wherein the at least one integrated feeder tube comprises a channel running between the air inlet opening and the air outlet opening inside each said burner grate, the air inlet opening is provided at a first end section of the integrated feeder tube of each of said burner grate that is closer to the cooking face than the air outlet opening, and the air outlet opening is provided at a horizontal section of the integrated feeder tube of each said burner grate that is closer to burning flames of the gas burner than the air inlet opening.

13. The gas stove top according to claim 1 , wherein the at least one integrated feeder tube comprises only one air outlet opening in one end provided above the mid section of the gas burner and only one air inlet opening connected to the cooking face at another end.

14. A gas stove top comprising:
a cooking hob and an air supply unit,
the cooking hob comprising:
a gas burner provided at a top surface of a cooking face; and
two or more burner grates placed over the gas burner to support a cooking vessel above the gas burner;

wherein each of the burner grates comprises at least one integrated feeder tube that has an air inlet opening at a first end of the integrated feeder tube adjacent to the cooking face and an air outlet opening at a second end of the integrated feeder tube disposed above a center of the gas burner and configured to supply air to flames of the gas burner,
each of the burner grates comprising a horizontal section and a vertical support shaft, said integrated feeder tube extending from said inlet opening adjacent to said cooking face, through said vertical support shaft, then through said horizontal section to said outlet opening disposed in an end of said horizontal section such that said outlet opening is oriented axially with respect to said horizontal section.

15. The gas stove top according to claim 1 , wherein
the air outlet opening of the integrated feeder tube of each of the burner grates is oriented axially relative to the integrated feeder tube at said second end thereof.

16. The gas stove top according to claim 1 , wherein
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Assignees

• Electrolux Home Products Corp Nv

Inventors

• Tisselli Filippo
• Zanetti Filippo
• Negretti Peter

Classifications

• F24C15/107 Primary

  Pan supports or grates therefor · CPC title

• F24C3/08 Primary

  Arrangement or mounting of burners · CPC title