Conveyorized Oven for Pipe Coupling Thermal Cleaning and Coating Curing
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Solution Overview
Problem
The existing pipe coupling treatment processes require separate ovens for thermal cleaning and coating baking, which are inefficient in terms of space usage and operational complexity, limiting their applicability due to the need for multiple ovens and different temperature regimes.
Innovation Solution
A compact, conveyorized oven system with two or more treatment chambers is introduced, where raw metal pipe couplings are thermally cleaned in a pre-heat zone and then coated and cured in a separate bake zone using directly heated air streams, optimizing space and reducing processing time and labor.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If separate ovens are used for thermal cleaning and coating baking, then each oven can be optimized for its specific temperature regime, but space usage becomes inefficient and operational complexity increases
Solution Approach 1:
The patent combines two separate ovens (thermal cleaning oven and coating bake oven) into a single integrated oven structure. The oven includes a first treatment chamber for thermal cleaning at higher temperatures (750°F) and a second treatment chamber for coating curing at lower temperatures (450-500°F), allowing both functions to be performed in one space-efficient unit while maintaining optimized temperature regimes for each process
Solution Approach 2:
The integrated oven is segmented into distinct treatment chambers with independent temperature control zones. The first chamber is optimized for high-temperature thermal cleaning while the second chamber is optimized for lower-temperature coating curing, allowing each segment to maintain its specific temperature regime while being part of a unified system
2Adaptability or versatility
If separate ovens are used for thermal cleaning and coating baking, then each process can be independently controlled, but device complexity and operational complexity increase
Solution Approach 1:
The single oven structure serves multiple functions by incorporating both thermal cleaning and coating curing capabilities. The oven can perform high-temperature thermal cleaning in the first chamber and lower-temperature coating curing in the second chamber, providing multi-functionality that reduces the need for separate dedicated equipment while maintaining independent control over each process
3Temperature
If multiple separate ovens are used, then temperature optimization for each process is achieved, but processing time and labor increase
Solution Approach 1:
The integrated oven enables continuous processing by allowing pipe couplings to be thermally cleaned in the first chamber and then immediately transferred to the second chamber for coating curing without removing them from the oven system. This continuous flow through integrated chambers reduces handling time and labor while maintaining optimized temperatures for each process stage
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
This solution enables a more efficient use of space and energy while reducing processing time and labor, allowing for continuous movement of pipe couplings through integrated pre-heat and bake zones, enhancing the overall efficiency of pipe coupling treatment.
Implementation Method 1
forming a hot air stream by directly heating air injected into a combustion chamber by a combustion burner
Implementation Method 2
flowing the heated air stream onto the pipe couplings moving through the treatment chamber
Implementation Method 3
a plurality of insulated panels attached to the platform and defining sidewalls, a front end wall, a rear end wall, a ceiling, and a bottom of an oven
Data Source
AI summary
Systems and methods for treating metal pipe couplings, including a frame and insulated panels attached to the frame forming an oven. A pre-heat zone and a bake zone inside the oven, the pre-heat zone separated from the bake zone by a shared oven wall. A combustion burner and recirculation blower are positioned in opposite ends of the oven in a pre-heat zone combustion/recirculation chamber. Another burner and recirculation blower pair are positioned in opposite ends of the oven in a bake zone combustion/recirculation chamber. Heated air supply plenums are fluidly connected to respective recirculation blowers, and include direction-adjustable nozzles to direct heated air generally downward onto pipe couplings moving through the preheat and bake zones. Return air plenums positioned in each of the pre-heat and bake zones each have an air inlet, and an outlet fluidly connected to respective combustion/recirculation chambers. Coating-cured metal pipe couplings made by the methods.