High efficiency high power inner flame burner

• US 10,145,568 B2
• Filed: 06/27/2016
• Issued: 12/04/2018
• Est. Priority Date: 06/27/2016
• Status: Active Grant

• Current Assignee: Whirlpool Corporation
• Original Assignee: Whirlpool Corporation
• Inventors: Balderas, Jonathan Tovar, Contreras, Francisco Javier Soria, Fajardo, Victor Ruelas, Galindo, Victor Gerardo Caloca, Jimenez, Ana Katia Silva
• Primary Examiner(s): SHIRSAT, VIVEK K
• Application Number:
  US15/193,735
• Publication Number:
  US 20170370594A1
• Time in Patent Office: 890 Days
• Field of Search: 126 39 E, 126 39 R, 126 39 H, 126 39 K
• CPC Class Codes: F23D 14/045 with a plurality of burner bars assembled together, e.g. in a grid-like arrangement
• CPC Class Codes: F23D 14/06 with radial outlets at the burner head
• CPC Class Codes: F23D 14/58 characterised by the shape or arrangement of the outlet or outlets from the nozzle, e.g. of annular configuration
• CPC Class Codes: F23D 14/64 with injectors
• CPC Class Codes: F23D 2203/1015 spherical
• CPC Class Codes: F23D 2203/1017 curved
• CPC Class Codes: F23D 2203/102 using perforated plates
• CPC Class Codes: F24C 3/082 on stoves
• CPC Class Codes: F24C 3/085 on ranges
• CPC Class Codes: F24D 3/082 Hot water storage tanks specially adapted therefor
• CPC Class Codes: Y02B 40/00 Technologies aiming at improving the efficiency of home appliances, e.g. induction cooking or efficient technologies for refrigerators, freezers or dish washers

Abstract

A gas burner for a cooking appliance includes a body defining perimeter and having a plurality of first groups of respective pluralities of first outlets a plurality of second groups of respective pluralities of second outlets. Each of the first outlets respectively defines a first outlet area, and each of the second outlets defines respective reduced outlet areas that are less than the first outlet area. Further, the first groups and second groups are alternately arranged around the perimeter, and a total number of first outlets is greater than a total number of second outlets.

Claims

1. A gas burner for a cooking appliance, comprising:

a body defining a perimeter and including;

a plurality of first groups of respective pluralities of first outlets; and

a plurality of second groups of respective pluralities of second outlets;

wherein;

each of the first outlets respectively defines a first outlet area;

each of the second outlets defines respective reduced outlet areas that are less than the first outlet area;

the first groups and second groups are alternately arranged around the perimeter;

a total number of first outlets is greater than a total number of second outlets;

the second groups each include three adjacent ones of the second outlets; and

a first one of the reduced outlet areas defined by a middle one of the three adjacent ones of the second outlets is a first reduced outlet area, the remaining two of the three adjacent ones of the second outlets define respective second reduced outlet areas that are greater than the first reduced outlet area.

2. The gas burner of claim 1, wherein the burner includes six first groups and six second groups.

3. The gas burner of claim 1, wherein:

the body defines a fuel-air mix inlet in communication with the plurality of outlets through a distribution chamber within the body;

a plurality of internal features disrupt portions of the distribution chamber at regular intervals; and

the second outlet groups radially align with respective ones of the internal features.

4. The gas burner of claim 3, wherein the internal features of the body include port bases defining secondary air ports extending vertically through the body of the burner.

5. The gas burner of claim 1, wherein:

the body includes a base defining an outer diameter of the body and a spreader received within a portion of the body and defining a recessed cavity inset relative to the outer diameter of the body;

a fuel-air mix distribution chamber in communication with the first outlets and the second outlets is defined at a lower end by a portion of the base and at an upper end by the spreader; and

the perimeter of the body is an inner perimeter around recessed cavity such that the plurality of outlets are defined through the spreader to extend inwardly from the distribution chamber to the recessed cavity.

6. A gas burner assembly for a cooking appliance, comprising:

a body defining;

a perimeter;

a plurality of first groups of respective pluralities of first outlets; and

a plurality of second groups of respective pluralities of second outlets;

an air-fuel mix inlet;

a distribution chamber in fluid communication between the air-fuel mix inlet and the plurality of outlets; and

a venturi in communication with the air-fuel mix inlet at a first end thereof, the first end of the venturi having a first diameter, and the venturi extending to a second end opposite the first end and having a second diameter greater than the first diameter; and

a holder unit defining an air inlet and a fuel inlet, both the air inlet and the fuel inlet being in fluid communication with the venturi at the second end thereof;

wherein;

each of the first outlets respectively defines a first outlet area;

each of the second outlets defines respective reduced outlet areas that are less than the first outlet area;

the first groups and second groups are alternately arranged around the perimeter;

a total number of first outlets is greater than a total number of second outlets;

the second groups each include three adjacent ones of the second outlets; and

a first one of the reduced outlet areas defined by a middle one of the three adjacent ones of the second outlets is a first reduced outlet area, the remaining two of the three adjacent ones of the second outlets define respective second reduced outlet areas that are greater than the first reduced outlet area.

7. The gas burner assembly of claim 6, wherein the second diameter is greater than the first diameter by at least 50%.

8. The gas burner assembly of claim 6, wherein the venturi tapers along a conical section between the first diameter and the second diameter.

9. The gas burner assembly of claim 6, wherein the venturi communicates with the distribution chamber at the air-fuel mix inlet, the air-fuel mix inlet defining one of a 90 degree corner or a fillet having a radius of less than 2 mm.

10. The gas burner assembly of claim 9, wherein the air-fuel mix inlet is open on a lower surface of the distribution chamber along a convex portion thereof.

11. The gas burner assembly of claim 6, wherein the body includes a base and a spreader, the base defining the air-fuel mix inlet and the spreader defining the plurality of outlets around an inner perimeter thereof, the distribution chamber defined between the base and the spreader.

12. The gas burner assembly of claim 11, wherein the base defines a convex portion surrounding the air-fuel mix inlet at which the venturi communicates with the distribution chamber, the spreader defining a concave portion facing and aligned with the convex portion of the base.

13. The gas burner assembly of claim 11, wherein the base and the spreader collectively define a plurality of secondary air ports through the body from a lower side thereof to an interior defined by the inner perimeter of the spreader.

14. A cooking hob, comprising:

a cooktop body defining a first burner area along the upper surface;

a burner having a body positioned within the first burner area and including;

a plurality of first groups of respective pluralities of first outlets; and

a plurality of second groups of respective pluralities of second outlets;

wherein;

each of the first outlets respectively defines a first outlet area;

each of the second outlets defines respective reduced outlet areas that are less than the first outlet area;

the first groups and second groups are alternately arranged around the perimeter;

a total number of first outlets is greater than a total number of second outlets;

the second groups each include three adjacent ones of the second outlets; and

a first one of the reduced outlet areas defined by a middle one of the three adjacent ones of the second outlets is a first reduced outlet area, the remaining two of the three adjacent ones of the second outlets define respective second reduced outlet areas that are greater than the first reduced outlet area.

15. The cooking hob of claim 14, wherein:

the cooktop body further defines an upper surface and a lower surface;

the body further defines a lower surface, an upper surface, and a plurality of ports extending between the upper and lower surfaces;

the lower surface of the burner is spaced above the upper surface of the cooktop body to define an air flow path from an outer periphery of the burner, along the lower surface thereof, and through the plurality of ports; and

the cooktop body further defines a plurality of support platforms around a circumference of the burner area, the body resting on the support platforms such that the lower surface of the body of the burner is spaced above the upper surface of the cooktop body.

16. The cooking hob of claim 14, wherein the body further defines:

an interior side wall surrounding and facing the upper surface of the body; and

the plurality of outlets extend between the interior side wall and a distribution chamber within the burner body.

17. The cooking hob of claim 16, wherein:

the body further defines;

a distribution chamber in fluid communication between an air-fuel mix inlet and the plurality of outlets; and

a venturi in communication with the distribution chamber at the air-fuel mix inlet thereof, the first end of the venturi having a first diameter, and the venturi extending to a second end opposite the first end and having a second diameter greater than the first diameter; and

the cooking hob further includes a holder unit coupled with the lower surface of the cooktop body at an interface therebetween including a poka-yoke alignment arrangement, the holder unit further defining an air inlet and a fuel inlet, both the air inlet and the fuel inlet being in fluid communication with the venturi at a second end thereof.