Compact Multiring Gas Burner With Narrow Injector Holder
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Solution Overview
Problem
Existing gas burners with multiple flame rings are heavy, cumbersome, expensive, and have installation constraints due to their large dimensions, leading to aesthetic issues and high production costs, making them unsuitable for small cooking applications.
Innovation Solution
A compact gas burner design featuring an elongated injector holder with a narrow profile, a base that divides flames, and a lightweight construction using a minimal number of components, allowing easy assembly and disassembly, and reduced material usage.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Use of energy by moving object
If the injector holder is made with large side cavities to allow sufficient primary air intake for external distribution chamber, then the air-gas mixture quality is improved, but the injector holder becomes heavy and cumbersome with large dimensions
Solution Approach 1:
The invention divides the air intake function into two separate paths: central cavity for primary air (from above) and side cavities for secondary air (from below). This segmentation allows each cavity to be optimized independently, with side cavities having smaller dimensions while still providing sufficient total air intake for the external distribution chamber.
Solution Approach 2:
The invention introduces a vertical dimension for air intake by allowing secondary air to be drawn from below the hob through the side cavities. This adds a new air intake path from a different spatial direction, reducing the need for large horizontal cavity dimensions while maintaining sufficient air supply.
2Reliability
If the injector holder is made with large side cavities to allow sufficient primary air intake, then the burner performance is improved, but the production cost increases due to material quantity and die-casting limitations
Solution Approach 1:
The injector holder is segmented into three separate die-cast pieces (central cavity, first side cavity, second side cavity) that are assembled together. This allows each piece to be manufactured with optimized, smaller dimensions, reducing material consumption and enabling more pieces to be produced per die-casting cycle, thereby reducing production costs.
Solution Approach 2:
The three separate injector holder pieces are nested or assembled together to form the complete injector holder structure. This assembly approach allows each component to be manufactured efficiently with reduced material while maintaining the overall functional integrity and performance of the complete assembly.
3Quantity of substance
If the injector holder has large width to accommodate large side cavities, then the air intake capacity is improved, but the installation constraints increase preventing use on small hobs
Solution Approach 1:
The air intake capacity is achieved through segmentation into multiple smaller cavities (central and two side cavities) rather than one large cavity. This allows the total air intake capacity to be maintained while the overall width of the injector holder is reduced, enabling installation on smaller hobs with limited space.
Solution Approach 2:
The invention utilizes the vertical dimension (from below the hob) for secondary air intake through the side cavities. This reduces the horizontal footprint requirements while maintaining sufficient total air intake capacity, thereby improving installation adaptability to various hob sizes.
4Reliability
If the annular distribution chamber has irregular profile to optimize flame patterns, then the burner functionality is improved, but the aesthetic appearance becomes non-traditional and unpleasant
Solution Approach 1:
The distribution system is segmented into separate internal central distribution chamber and external annular distribution chamber. This allows the internal chamber to have an irregular profile optimized for flame patterns while the external annular chamber maintains a regular, aesthetically pleasing shape that is visible from above.
Solution Approach 2:
The internal central distribution chamber with irregular profile is nested within the external annular distribution chamber with regular profile. This nesting arrangement allows the internal chamber to optimize flame patterns while the external chamber provides a traditional aesthetic appearance, combining functional optimization with visual appeal.
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 new design achieves high thermal power with compact dimensions, affordable production costs, and ease of installation, while maintaining a pleasant aesthetic appearance and functional efficiency.
Implementation Method 1
Two or more injectors are mounted on the bottom of the injector holder, generally with a vertical axis, which are fluidly connected to the gas feed inlet
Implementation Method 2
the suction is provided only from above the hob
Implementation Method 3
the base is also made of die-cast aluminum and is provided with two or more vertical axis ducts
Implementation Method 4
Known burners with multiple flame rings, of the type also called 'multiring'
Data Source
Figure 1A
Figure 1B~1C
Figure 2A~2B
AI summary
Gas burner (2) for a hob (90), preferably suitable for mounting on a built-in hob, comprising: - an injector holder (6), - a base (4) that can be positioned on said injector holder (6), - at least one lid (8) that can be positioned on the base (4), and in which: - said at least one lid (8), said base (4) and said injector holder (6) are superposed along a direction Z, - said base (4) comprises an internal chamber (10) for mixing and/or distributing a mixture of air and gas, thus feeding a first ring of flames (12), and an external annular chamber (12) for mixing and/or o distribution of a mixture of air and gas, to thus feed a second crown of flames (22) and/or a third crown of flames (24), - said at least one lid (8) being configured to close above said inner chamber (10) and said outer annular chamber (12), and in which said injector holder (6) comprises: - a central concave element (31') which internally delimits a corresponding central cavity (32') in which a corresponding central injector (33') is mounted, said central cavity (32') being in fluid communication with said internal chamber ( 10) of the base (4), - two lateral concave elements (31", 31"') which delimit within them respective lateral cavities (32", 32"'), in each of said two lateral cavities (32", 32"') having mounted a corresponding lateral injector (33", 33"'), said lateral cavities (32", 32"') being in fluid communication with said external annular chamber (20) of the base (4), - one and only gas inlet (30) which is in fluidic communication with all three injectors (33', 33", 33'"), and in which: - the central cavity (32') is placed between the two lateral cavities (32", 32"') and said three cavities (32', 32", 32"') are placed side by side along an X direction, - said injector holder (6) has a substantially elongated shape along the X direction, the extension along the X direction of said injector holder (6) being different and greater than the extension of said injector holder (6) along a Y direction where the X directions and Y are perpendicular to both each other and the Z direction, and characterized in that: - each of said two lateral concave elements (31", 31"') comprises at least one respective opening (50", 50"') for entry into the corresponding lateral cavity (32", 32' ") of primary air (17) at least or only from below the cooking surface (90), - the development of the injector holder (6) along the Y direction is substantially equal to or less than about 1/3 of the development of the injector holder itself along the X direction.