Burner with multiple sections and control for adaptable use

Patent metadata

Field	Value
Publication number	US-2022018534-A1
Application number	US-202016930625-A
Country	US
Kind code	A1
Filing date	Jul 16, 2020
Priority date	Jul 16, 2020
Publication date	Jan 20, 2022
Grant date	—

Abstract

A cooking burner includes a spreader defining a first side wall defining an outer profile having first and second extension sections opposed about a first axis. The spreader further defines first and second arced sections, each extending outwardly along a second axis perpendicular to the first axis from and between parallel straight segments of the first and second extension sections, respectively. The spreader further defines a second side wall disposed inwardly of and concentric with the first and second arced sections and a plurality of fuel outlets extending through both the first side wall and the second side wall. A circular inner cap is assembled with an upper portion of the circular inner profile, an annular outer cap is assembled with respective upper portions of the first and second arced sections, and first and second extension caps assembled with respective upper portions of the first and second extension sections.

First claim

What is claimed is:

1 . A cooking burner, comprising:
a spreader defining:
a first side wall defining an outer profile having first and second extension sections opposed about a first axis, each having a semi-circular end segment with first and second parallel straight segments extending parallel with the first axis from opposite ends of the semi-circular segment, the spreader further defining first and second arced sections, each extending outwardly along a second axis perpendicular to the first axis from and between the first parallel straight segments and second parallel straight segments of the first and second extension sections, respectively;
a second side wall defining a circular profile disposed inwardly of and concentric with the first and second arced sections; and
a plurality of fuel outlets extending through both the first side wall and the second side wall;
a circular inner cap assembled with an upper portion of the circular inner profile; an annular outer cap assembled with respective upper portions of the first and second arced sections; and first and second extension caps assembled with respective upper portions of the first and second extension sections.

2 . The cooking burner of claim 1 , wherein the spreader further defines an interior wall segment separating an interior of the spreader into a first extension fuel mixing chamber within the first extension section of the outer profile and an outer circular fuel mixing chamber within the first and second arced sections.

3 . The cooking burner of claim 1 , wherein the spreader further defines:
a third side wall defining an interior profile separating the interior of the spreader, within an outer circular fuel mixing chamber within the first and second arced sections, and an inner open section of the spreader; and a pair of channel walls extending from the third side wall to the first side wall and defining a carryover channel between the inner open section of the spreader and a second extension fuel mixing chamber within the first extension section of the outer profile.

4 . The cooking burner of claim 3 , wherein the channel walls taper outwardly from the third side wall to the first side wall.

5 . The cooking burner of claim 3 , further including a holder supporting the spreader and an ignition electrode at an intersection of the first arced section and the first extension section, wherein:
the ignition electrode activates to cause ignition of a fuel-air mixture flowing through first ones of the fuel outlets, within the first arced section and the first extension section, with the carryover channel promoting ignition of second ones of the fuel outlets within the second arced section.

6 . The cooking burner of claim 3 , further including an ignition electrode disposed adjacent to the second side wall, wherein:
the ignition electrode activates to cause ignition of a fuel-air mixture flowing through first ones of the fuel outlets extending through the second side wall, with the carryover channel promoting ignition of second ones of the fuel outlets extending through the first side wall.

7 . The cooking burner of claim 3 , wherein:
the second side wall defines a central fuel mixing chamber and is disposed within the inner open section of the spreader; and one of the plurality of fuel outlets extending through the second side wall defines a pilot flame outlet and is directed toward the carryover channel.

8 . The cooking burner of claim 1 , wherein the first side wall defines an upper edge along the outer profile, the upper edge being disposed at a consistent height above a lower surface of the spreader through the first and second extension sections and the first and second arced sections.

9 . The cooking burner of claim 1 , wherein ones of the plurality of fuel outlets extending through the first side wall extend through and are open on an upper surface of the first side wall; and
the first and second extension caps define a lower inside surface enclosing upper portions of ones of the plurality of fuel outlets extending through the first side wall within the respective first and second extension sections and diverter ridge extending from a lower inside surface thereof at a position disposed inwardly of an interior of the first side wall and partially overlapping with at least some of the ones of the plurality of fuel outlets.

10 . The cooking burner of claim 1 , wherein the spreader further defines:
a lower surface from which the first side wall extends in a direction generally perpendicular to the lower surface, a first interior portion of the spreader being disposed within the first side wall and a corresponding portion of the lower surface; first and second inlet ports through the lower surface of the spreader and open to the first interior portion, the first inlet port being disposed within the first extension section and the second inlet port disposed within the second extension section; a plurality of lower ribs extending from the lower surface in a direction opposite the first side wall, at least one of the plurality of lower ribs surrounding and being spaced apart from the first inlet port, and at least one of the plurality of lower ribs surrounding and being spaced apart from the second inlet port.

11 . The cooking burner of claim 10 , further including a holder defining an interior fuel distribution chamber and supporting the spreader with the first and second inlet ports being in fluid communication with the interior fuel distribution chamber and the lower surface of the spreader being spaced from an upper edge of the holder to define an inflow path through a portion of the fuel distribution chamber and into the first and second inlet ports, wherein:
the lower ribs extend past the upper edge of the holder partially into the fuel distribution chamber to deflect a portion of an air flow through the primary inflow path away from adjacent ones of the plurality of fuel outlets.

12 . The cooking burner of claim 1 , further including:
first and second fuel supply lines respectively associated with the first extension section, the second extension section, and the first and second arced sections, and the second side wall; and a bidirectional valve coupled with the first and second fuel supply lines and selectively moveable from a central position in which the valve is closed with respect to the first and second fuel supply lines into a first range of movement, adjusting a flow of fuel to the second fuel supply line while remaining closed with respect to the first fuel supply line, and a second range of movement adjusting the flow of fuel to the first fuel supply line while remaining closed with respect to the second fuel supply line.

13 . The cooking burner of claim 1 , further including:
first, second, and third fuel supply lines respectively associated with the first extension section and the second extension section, the first and second arced section, and the second side wall; and a first valve coupled with the first and second fuel supply lines and selectively moveable from first position in which the valve is closed with respect to the first and second fuel supply lines into a first range of movement, adjusting a flow of fuel to the first and second fuel supply lines simultaneously; and a second valve coupled with the third fuel supply line and selectively moveable from a first position in which the valve is closed with respect to the third fuel supply line into a first range of movement, adjusting the flow of fuel to the third fuel supply line.

14 . A cooking hob, comprising:
an upper cooktop surface; a burne

Assignees

• Whirlpool Co

Inventors

• Caloca Victor Gerardo
• Manrique Victor H

Classifications

• F23D2900/14064

  Burner heads of non circular shape · CPC title

• F23D11/42

  Starting devices (igniting F23Q) · CPC title

• F23D2900/14062

  for cooking ranges having multiple flame rings · CPC title

• F23D11/402

  Mixing chambers downstream of the nozzle · CPC title

• F24C3/085

  on ranges · CPC title