Atomization Burner With Variable Speed DC Motors
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Solution Overview
Problem
The existing Babington atomization burners, such as the AIRTRONIC, have limited flexibility in fuel and air flow rates, leading to excessive heat output, inefficiency, and difficulty in temperature control, making them unsuitable for portable cooking appliances which require adjustable heat and energy efficiency.
Innovation Solution
A burner system with adjustable speed DC motors controlled by a microcomputer to dynamically adjust fuel, atomizing air, and combustion air flow rates, allowing for precise control of heat output and energy efficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If fixed speed AC motor is used to drive fuel pump, atomizing air compressor, and combustion air blower, then the burner structure is simple, but the flexibility in fuel and air flow rates is limited
Solution Approach 1:
The patent replaces fixed speed AC motors with variable speed DC motors that can dynamically adjust their rotational speed. This allows the fuel pump, atomizing air compressor, and combustion air blower to operate at different speeds, providing flexible control over fuel flow rate and air flow rates. The dynamic speed adjustment capability enables the burner to adapt to different operating conditions and fuel types while maintaining a relatively simple overall structure.
2Power
If fixed speed AC motor drives all components at maximum speed, then the burner provides high heat output, but the heat output is excessive for portable cooking appliances and temperature control is difficult
Solution Approach 1:
The variable speed DC motors enable dynamic adjustment of the burner's heat output by controlling the rotational speed of the fuel pump and air blowers. This allows the burner to provide high heat output when needed while also enabling precise temperature control for portable cooking applications. The ability to modulate speed provides smooth control over the fuel-air mixture and combustion intensity.
Solution Approach 2:
The patent changes the operational parameters of the burner by allowing continuous adjustment of motor speed, which directly controls fuel flow rate, atomizing air flow rate, and combustion air flow rate. This parameter control enables the burner to operate at different power levels and maintain optimal temperature for various cooking requirements, eliminating the excessive heat output problem of fixed speed designs.
3Productivity
If adjustable mechanical restrictor is used in fuel flow pathway, then fuel flow rate can be reduced, but the restrictor is only accessible at manufacture and not adjustable by consumer
Solution Approach 1:
The patent replaces the mechanical restrictor system with an electronically controlled variable speed DC motor system. Instead of using a physical restrictor that limits fuel flow through its opening size, the system uses motor speed control to regulate fuel pump output. This substitution allows consumers to adjust fuel flow rate easily through electronic controls without disassembling the burner, while maintaining precise control over the fuel-air mixture.
4Loss of energy
If flow rates are adjusted to reduce heat output, then energy efficiency improves, but power consumption increases due to fixed speed motors operating at maximum capacity
Solution Approach 1:
The variable speed DC motors allow the burner to match power consumption to the actual energy requirements. By reducing motor speed when lower heat output is needed, the system consumes less electrical power while maintaining optimal fuel combustion. This dynamic operation improves overall energy efficiency by avoiding the waste of operating motors at maximum capacity regardless of actual demand.
Solution Approach 2:
The patent changes the operational parameters of the motor system from fixed maximum speed to variable speed operation. This allows the burner to optimize the relationship between power consumption and energy efficiency by adjusting motor speed to match the required heat output level, reducing unnecessary energy consumption while maintaining efficient fuel combustion.
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 system achieves reduced heat output, lower fuel consumption, and improved energy efficiency, enabling the use of lighter, more portable cooking appliances and precise temperature control, eliminating the need for secondary ventilation and reducing power consumption.
Implementation Method 1
Pressurized clean air is forced through the hole, creating a spray so fine that when burned, it creates no smoke, odor or carbon monoxide
Implementation Method 2
Fuel pump delivers a stream of fuel from a reservoir to a point above convex heads of an atomizing chamber
Implementation Method 3
Combustion air blower delivers a flow of air to the flame tube that combusts with the fuel to provide flame and heat, and to carry the heat and combusting fuel out of the flame tube
Implementation Method 4
An ignitor ignites the atomized fuel
Implementation Method 5
adjustable speed DC motors
Implementation Method 6
combusts with the fuel to provide flame and heat
Data Source
AI summary
An atomizing burner and corresponding method for turning an atomizing burner from an ON state to an OFF state. The burner has independently controllable flows of atomizing air, combustion air, and fuel flow, the burner in the ON state having flow values of burner parameters including flow of atomizing air, flow of combustion air, and fuel flow. The method includes: changing, in response to an OFF instruction, flow of at least one of the flow of atomizing air, combustion air and/or fuel to a lower non-zero value; first discontinuing, after a first period of time since the changing, flow of fuel and flow of atomizing air; maintaining, for a second period of time since the first period of time, flow of combustion air; second discontinuing, after the maintaining, flow of combustion air; wherein the maintaining prevents buildup of excess heat inside the burner during the transition to the OFF state.