Heated Air Ejection Structure for Textile Drying Ovens
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Solution Overview
Problem
Existing drying oven designs for textile products suffer from non-uniform air distribution due to unbalanced air pressure in ejection chambers, leading to issues with dimensional stability and color homogeneity, especially when fan speeds or air flow rates deviate from design specifications.
Innovation Solution
The implementation of a heated air ejection structure with a common second manifold that fluidly connects the opposite ends of air ejection chambers, ensuring uniform air pressure distribution across all sleeves, even when fan speed or air flow rate changes occur, thereby maintaining consistent air flow and drying efficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If a common first manifold supplies heated air to multiple ejection chambers, then air distribution simplifies, but air pressure becomes unbalanced across chambers when fan speed deviates from design speed
Solution Approach 1:
The manifold system is segmented into two separate manifolds: a first manifold for supplying heated air to the ejection chambers, and a second manifold for interconnecting the opposite ends of the ejection chambers. This segmentation allows independent pressure balancing across different parts of the system, resolving the contradiction between simplified distribution and pressure uniformity.
Solution Approach 2:
The second manifold acts as an intermediary element that mediates pressure distribution between the ejection chambers. By providing a common connection path for the opposite ends of all ejection chambers, it equalizes pressure across the system even when the first manifold's supply pressure varies due to fan speed changes.
2Area of stationary object
If ejection chambers are arranged in parallel banks, then air flow coverage increases, but pressure distribution becomes non-uniform across the chambers
Solution Approach 1:
The second manifold creates an equipotential pressure condition across all ejection chambers by providing a common fluid communication path for their opposite ends. This ensures that all chambers operate at the same pressure potential, eliminating the non-uniform pressure distribution that would otherwise occur in parallel bank configurations.
3Productivity
If fan speed is increased to handle higher air flow requirements, then drying capacity increases, but air pressure unbalance worsens across the ejection chambers
Solution Approach 1:
The second manifold provides a passive feedback mechanism for pressure balancing. When fan speed increases and supply pressure rises, the second manifold automatically distributes the increased pressure uniformly across all ejection chambers through fluid communication, preventing pressure unbalance without requiring active control systems.
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 configuration ensures homogeneous air flow and pressure distribution across the fabric, enhancing dimensional stability and color consistency, regardless of variations in fan speed or air flow rate, thus improving the overall quality of dried textile products.
Implementation Method 1
the opposite ends of these ejection chambers are connected one another, preferably through a common second manifold, thus allowing a substantially uniform distribution of air pressure between the sleeves
Implementation Method 2
The air entering in the ejection chambers or sleeves from the first manifold distributes also in the space defined by said second manifold, being fluidly connected
Data Source
Figure 1
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AI summary
Air ejection structure (19A, 19B) for drying ovens for textile products, comprising a plurality of air ejection chambers (21), on which air ejection openings (23) are defined. Corresponding ends of the ejection chambers (21) are connected to a common first manifold (20) suitable to receive heated air. The opposite ends of the ejection chambers (21) are connected to each other, thus allowing a substantially uniform distribution of the air pressure between the chambers, also in the case of pressure variation in the first manifold.