Dual circuit combustion system and method for operating such a dual circuit combustion system
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Solution Overview
Problem
Existing dual-circuit burner systems require separate control valves and ignition devices for each burner, making them complex and inefficient in modulating total burner output.
Innovation Solution
A dual-circuit burner system with a single modulation valve and actuator that controls both inner and outer burner outputs, allowing for precise adjustment of gas flow rates to achieve a target total burner output, with the outer burner only operating when the inner burner's output is insufficient.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If separate control valves and ignition devices are provided for each burner, then each burner can be controlled independently, but the device complexity increases
Solution Approach 1:
The patent combines multiple control functions into a single modulation valve with a common actuator that controls gas flow to both the inner and outer burners. The ignition device is similarly integrated to ignite both burners through a shared ignition means, thereby reducing the number of separate components while maintaining the ability to independently control each burner's output.
Solution Approach 2:
The single modulation valve is designed with multiple valve outlets that can selectively supply gas to different burners, making it a universal control component. The common actuator can position the valve to control gas flow to the inner burner, outer burner, or both simultaneously, providing multi-functional control capability.
2Device complexity
If a single modulation valve controls both burners, then device complexity is reduced, but precision in adjusting individual burner outputs may be compromised
Solution Approach 1:
The modulation valve is segmented into multiple independent valve outlets, each capable of controlling gas flow to specific burners. The actuator can position each outlet independently, allowing precise control of gas flow distribution to the inner and outer burners separately while using a single integrated valve body.
Solution Approach 2:
The valve design allows dynamic adjustment of gas flow distribution between burners. The actuator can continuously vary the opening degree of each valve outlet, enabling flexible and precise control of individual burner outputs across a wide range, from zero to maximum capacity.
Data Source
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AI summary
A dual-circuit burner system (10) for a gas cooktop comprises a control unit (11), a control unit (26), a modulating valve (50) with actuator (52) and control range, an inner circuit with an inner circuit gas supply line (44) and an inner circuit burner (36), and surrounding this an outer circuit with an outer circuit gas supply line (42) and an outer circuit burner (40). Depending on the required target total burner output, a defined gas flow rate (Vinner, Vouter) is set to each circuit by means of the modulating valve (50). In the dual-circuit burner system (10), the actuator (52) changes only the inner burner output (Pinner) in one part of its control range, while the outer burner output remains at zero. In another control range, only the outer burner output (Pouter) is changed, while the inner burner output (Pinner) remains constant.For operation, a target total burner output is controlled within a range of total burner output (Ptotal) from zero to a maximum total burner output (Ptotal_max) by setting a defined gas flow rate to each of the two circuits using the modulation valve (50).