Multi-ring Gas Burner Venturi Throttle Flame Height Control
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Solution Overview
Problem
Multi-ring gas burners face issues with unsightly flames at high flow rates due to excessive fuel flow through carryover slots and insufficient fuel flow at low flow rates, making it difficult to regulate fuel effectively across different operating conditions.
Innovation Solution
Incorporating a Venturi throttle defined by a pair of restrictors in the carryover slot between the inner and outer burner rings to regulate the flow of gaseous fuel, which limits flame height at high flow rates and ensures sufficient fuel supply at low flow rates.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Length of moving object
If the carryover slot's inlet size is reduced to restrict fuel flow at high flow rates, then flame height is limited, but fuel flow becomes insufficient for proper operation at low flow rates
Solution Approach 1:
The patent introduces a movable restrictor that can dynamically adjust its position to change the effective inlet size of the carryover slot. This allows the system to adapt the fuel flow restriction based on operating conditions, providing both flame height control at high flow rates and sufficient fuel flow at low flow rates, thereby resolving the contradiction between these two requirements
Solution Approach 2:
The patent changes the parameter of inlet size dynamically through the movable restrictor mechanism. By adjusting the restrictor's position, the effective inlet size varies to match different flow rate requirements, enabling the system to maintain optimal performance across both high and low flow conditions without being fixed at a single size
2Length of moving object
If the carryover slot's inlet size is reduced to restrict fuel flow, then flame height is controlled, but the device complexity increases due to additional restrictor components
Solution Approach 1:
The movable restrictor provides dynamic control capability while maintaining a relatively simple overall structure. The restrictor can be actuated by various mechanisms (manual, automated, or pressure-driven) to adjust inlet size as needed, offering flame height control without requiring a completely complex redesign of the carryover slot system
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 Venturi throttle effectively regulates fuel flow, improving the performance of the multi-ring gas burner by controlling flame height and maintaining proper operation across varying flow rates, enhancing the burner's efficiency and usability.
Implementation Method 1
A pair of restrictors defines a Venturi throttle therebetween. The Venturi throttle can assist with regulating a flow of gaseous fuel out of the carryover slot.
Data Source
AI summary
A multi-ring gas burner for a cooktop appliance is provided. The multi-ring gas burner includes an inner burner ring, an outer burner ring, and a carryover slot that extends between about the inner burner ring and about the outer burner ring. A pair of restrictors defines a Venturi throttle therebetween. The Venturi throttle can assist with regulating a flow of gaseous fuel out of the carryover slot.