Cooker Gas Burner Pilot Flame Stabilization With Storage Chamber
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Solution Overview
Problem
Existing burners with pilot flames directed over main flames suffer from irregular and unstable gas-primary air mixture flow during ignition, leading to compromised pilot flame ignition and combustion instability, especially in multi-flame crown configurations.
Innovation Solution
Incorporating a storage chamber for the fuel mixture that regulates flow pressure and flow rate at the pilot flame outflow port, ensuring a laminar pilot flame and stabilizing main flame ignition, with optional concentric flame spreaders and radial notches for efficient combustion across multiple flame crowns.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the outflow port for the pilot flame is placed over the radial outlets for the main flames, then the pilot flame can be directed towards the main flames outlets to enable ignition, but the gas-primary air mixture outflow becomes irregular and unstable during ignition transitory
Solution Approach 1:
The storage chamber accumulates gas-primary air mixture in advance before ignition occurs. This preliminary accumulation ensures that sufficient fuel mixture is available at the outflow port during the ignition transitory, preventing flow instability and enabling reliable pilot flame ignition.
Solution Approach 2:
The storage chamber acts as an intermediary element between the main gas supply and the pilot flame outflow port. It mediates the flow by buffering pressure variations and ensuring stable delivery of gas-primary air mixture to the pilot flame, decoupling the ignition process from direct supply fluctuations.
2Productivity
If multiple flame concentric crowns are provided, then the burner can produce multiple flame spreaders, but the combustion instability in single flame crowns leads to non-contemporaneous and difficult ignition of every primary flame
Solution Approach 1:
The burner is divided into multiple independent flame crowns, each with its own storage chamber and outflow port configuration. This segmentation allows each flame crown to be ignited and stabilized independently, enabling non-simultaneous ignition of different crowns while maintaining overall system stability.
Solution Approach 2:
Each flame crown is equipped with its own storage chamber that pre-accumulates gas-primary air mixture. This preliminary action ensures that when ignition is initiated, each crown has sufficient fuel mixture readily available, enabling reliable and controllably sequential ignition across multiple crowns.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The solution stabilizes pilot flame combustion during ignition and maintains efficient combustion of main flames, ensuring contemporaneous ignition and improved operational stability across all flame crowns with a single ignition spark plug.
Implementation Method 1
the presence of a storage chamber for the fuel mixture assures an appropriate feeding, relatively to flow rate and pressure, of such a mixture to the outflow port of the pilot flame
Implementation Method 2
assures an appropriate feeding, relatively to flow rate and pressure, of such a mixture to the outflow port of the pilot flame, at least for the ignition transitory of the burner, and thereby allows to stabilize the pilot flame combustion
Implementation Method 3
the outflow port (5) ... adapted for feeding a pilot flame with such a fuel mixture, the outflow port (5) being so shaped as to establish a laminar pilot flame, directed towards a plurality of outlets (4) for the main flames
Implementation Method 4
a laminar pilot flame, directed towards the plurality of outlets (4) for the main flames, for igniting the same
Implementation Method 5
stabilize the pilot flame combustion, and therefore the main flames
Data Source
Figure 1~2
Figure 3~5
Figure 4
AI summary
Burner (1) for gas cookers, of the type comprising at least one flame spreader (2) and at least a corresponding lid (3) adapted to define at least partially a transit chamber (20) for a gas - primary air fuel mixture, said at least one flame spreader (2) comprising at least a plurality of radial outlets (4) to feed a plurality of main flames with said fuermixture,'and af least one outflow port (5), placed over said plurality of radial outlets (4), to feed with said fuel mixture at least one pilot flame, said at least one outflow port (5) being shaped to direct said at least one pilot flame towards said at leasf one' plurality of radial outlets (4). The burner further comprises at least one storage chamber (6) for trie' fuel mixture for said at least one pilot flame, placed nearby and in fluidic connection with said at least one outflow port (5), said storage chamber (6) being fed by one or more inlets (7) disposed in fluidic communication with said transit chamber (20) for the fuel mixture.