Dual stacked gas burner and a venturi for improving burner operation
First Claim
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1. A cooktop burner assembly comprising:
- a main burner; and
a simmer burner positioned in a stacked relationship with and located below said main burner, wherein a diameter of said simmer burner is greater than a diameter of said main burner, said simmer burner comprising a first set of ports configured to output a flame and a second set of ports located behind said first set of ports configured to distribute an air-gas mixture to said first set of ports.
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Abstract
A cooktop burner assembly is described. The cooktop burner assembly includes a main burner, and a simmer burner located below the main burner, where a diameter of the simmer burner is greater than a diameter of the main burner. The closer placement of the main burner to a cooking vessel placed on top of the cooktop burner assembly as compared to the placement of the simmer burner from the cooking vessel increases thermal efficiency. Moreover, the farther placement of the simmer burner from the cooking vessel facilitates simmering of items in the cooking vessel and the larger diameter of the simmer burner reduces a possibility of overheating the main burner and the cooking vessel.
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Citations
19 Claims
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1. A cooktop burner assembly comprising:
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a main burner; and a simmer burner positioned in a stacked relationship with and located below said main burner, wherein a diameter of said simmer burner is greater than a diameter of said main burner, said simmer burner comprising a first set of ports configured to output a flame and a second set of ports located behind said first set of ports configured to distribute an air-gas mixture to said first set of ports. - View Dependent Claims (2, 3, 4, 5, 6)
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7. A gas burner assembly for a cooking appliance with a cooktop for surface cooking comprising:
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a first burner extending above the cooktop surface; a second burner extending above the cooktop surface and positioned in a stacked relationship with and located below said first burner, said second burner comprising a first set of ports configured to output a flame and a second set of ports located behind said first set of ports configured to distribute an air-gas mixture to said first set of ports; and a chamber located below said second burner, wherein said chamber is configured as a primary air reservoir for one of said first and said second burners, at least a portion of said chamber extending above the cooktop surface, said portion being configured to draw primary air from above the cooktop surface for isolating said second burner from the effects of pressure changes occurring below the cooktop surface. - View Dependent Claims (8, 9, 10, 11, 12, 13, 14, 15, 16)
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- 17. A gas burner comprising a venturi configured to supply a substance to said burner, wherein dimensions of said venturi conform to a shape of a flow of the substance within said venturi to facilitate preventing formation of a recirculation zone within said venturi, said venturi comprising a first wall portion defining a first inner profile and a second wall portion defining a second inner profile different from the first inner profile and substantially parallel to a vertical center axis of said venturi.
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19. A gas burner assembly for a cooking appliance with a cooktop for surface cooking comprising:
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a first burner extending above the cooktop surface; a second burner extending above the cooktop surface and positioned in a stacked relationship with and located below said first burner; and a chamber located below said second burner, said chamber configured as a primary air reservoir for one of said first and said second burners, at least a portion of said chamber extending above the cooktop surface, said portion being configured to draw primary air from above the cooktop surface for isolating said second burner from the effects of pressure changes occurring below the cooktop surface, said first burner comprising a first set of ports and a second set of ports, each port within the second set is vertically lower than each port within the first set, said second burner comprising a third set of ports, and an annular channel is formed between the second and third set of ports.
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Specification