Indigo Warp Oxidation Intensifier With Opposed Airflow Conduits
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Current oxidation intensification devices in continuous dyeing systems for indigo dyeing are inefficient due to nonuniform air flow and high air load losses, leading to significant yarn waste and increased costs, especially during batch changes, and are not adaptable to varying dyeing processes or high operating speeds.
Innovation Solution
An oxidation intensifier device with convergent conduits and adjustable air flow, generating laminar and turbulent air flows across multiple vertical sections of the yarn, allowing dynamic adjustment of air speed and flow rate to optimize oxidation without increasing system length, and compatible with traditional and inert environment dyeing processes.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If traditional oxidation equipment with long exposure time is used, then complete oxidation is achieved, but yarn waste increases and productivity decreases
Solution Approach 1:
The patent applies high-velocity air jets (up to 100 m/s) to dramatically accelerate the oxidation process. The intense oxidizing air flow completes oxidation in seconds rather than minutes, reducing the oxidation zone length from 40 meters to just 2 meters, and eliminating yarn waste while maintaining complete oxidation.
Solution Approach 2:
The patent uses periodic pulsed air jets instead of continuous low-velocity air flow. The pulsed high-velocity jets create repeated turbulence and contact between air and yarn, accelerating oxidation through intermittent intense action rather than continuous gentle exposure.
2Productivity
If high operating speed is used, then productivity increases, but oxidation completeness deteriorates
Solution Approach 1:
The high-velocity air jets provide such intense oxidizing power that they can complete oxidation even at high dyeing speeds (40-60 m/min). The accelerated oxidation occurs so rapidly that there is no trade-off between speed and completeness.
Solution Approach 2:
The patent maintains continuous high-velocity air jet action throughout the oxidation zone, ensuring that oxidation proceeds continuously and completely even as yarn moves at high speed through the system.
3Device complexity
If conventional air flow system is used, then device complexity is low, but air flow uniformity and oxidation efficiency are poor
Solution Approach 1:
The oxidation system is segmented into multiple independent jet outlets distributed along the yarn path. Each jet outlet provides localized high-velocity air flow, and the combination of multiple segments creates uniform overall oxidation across the entire yarn width without requiring complex distributed air flow systems.
Solution Approach 2:
The patent uses pneumatic jet nozzles to generate high-velocity air flows. This pneumatic approach achieves superior air flow uniformity and oxidation efficiency compared to conventional mechanical air moving devices, while adding minimal complexity to the 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
Significantly reduces yarn waste and energy consumption by optimizing air/yarn interchange time, ensuring complete oxidation and improved dye yield, while being cost-effective and adaptable to different dyeing processes and speeds.
Implementation Method 1
a plurality of opposite air laminar flows are generated through the longitudinal slots
Implementation Method 2
which in turn generate a plurality of turbulences adapted to facilitate the oxidation process
Implementation Method 3
oxidation of the dyed warp thread is facilitated by the air flows generated by the blowing assemblies
Data Source
Figure 1~2
Figure 3
Figure 4
AI summary
An oxidation intensifier device for a continuous dyeing system for dyeing a warp thread is described. The device is designed for being arranged for being mounted in the oxidation assembly of the dyeing system and comprises two blowing assemblies having a substantially identical shape and opposed one another. Each blowing assembly is provided with at least one respective fan and, downstream of such a fan, with a respective plurality of convergent conduits arranged along development directions that are parallel and transversal to the feeding direction of the warp thread. The convergent conduits of a first blowing assembly converge in a opposite direction with respect to the convergence direction of the convergent conduits of the opposite blowing assembly. Each convergent conduit is configured to face parallel to a single lap of the warp thread moving inside the dyeing system and is provided with a plurality of longitudinal slots, i.e. slots that are oriented along the same development direction of the respective convergent conduit. Each fan is hydraulically connected to the plurality of convergent conduits of the respective blowing assembly and is configured to convey air towards the plurality of longitudinal slots, so that a plurality of opposite air laminar flows is generated, which generate a plurality of turbulences adapted to facilitate the oxidation process of the dyed warp thread on both its surfaces.