Industrial Furnace Burner Actuator for Flow Proportionality
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing burners face non-linearity issues between control signals and flow rate changes, leading to complex and large devices that complicate integration into compact installations.
Innovation Solution
A burner design with a fuel and oxidant supply assembly using a single actuator to control both fuel and oxidant flow rates through movable shutters and a drive shaft, allowing proportional adjustment of passage cross-sections via angular position, reducing the number of moving components and size.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a single actuator with butterfly box type effectors is used to control fuel and oxidant flow rates, then the proportionality of flow rates is maintained, but the device complexity and size increase due to non-linear control requirements
Solution Approach 1:
The single actuator is segmented into two independent effectors: a first effector for controlling the fuel flow rate and a second effector for controlling the oxidant flow rate. Each effector operates independently with its own linear control characteristic, eliminating the need for complex cam profiles while maintaining proportional flow rate control through coordinated operation of both effectors.
2Measurement precision
If cam profiles are used to compensate for non-linearity in butterfly box effectors, then control precision is improved, but the device size and integration difficulty increase
Solution Approach 1:
The complex mechanical cam profile system is replaced with a simplified actuator mechanism that directly provides linear control. The first and second effectors are designed with linear control characteristics, substituting the need for mechanical cam profiles and reducing the overall device volume while maintaining control precision.
3Adaptability or versatility
If multiple separate actuators are used for fuel and oxidant control, then control flexibility is improved, but the device complexity and size increase
Solution Approach 1:
Two separate actuators are merged into a single actuator that controls both the fuel flow rate and oxidant flow rate. This single actuator incorporates both the first effector for fuel control and the second effector for oxidant control, reducing the number of moving components while maintaining the flexibility to independently adjust both flow rates through its dual-control capability.
Data Source
Figure 1~2b
Figure 3~4b
AI summary
One aspect of the invention relates to a burner (1) for an industrial furnace, comprising a fuel distribution device (3) and an oxidant distribution device (6) directly actuated by means of a drive shaft (12).