Textile Dryer Intermediate Chamber Airflow Management
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Solution Overview
Problem
Existing textile dryers face challenges in efficiently ducting exhaust and fresh air without disrupting air circulation, lack space for heat exchanger integration, and suffer from complex and maintenance-intensive seals, leading to energy inefficiencies and space constraints.
Innovation Solution
The solution involves an additional chamber between the dryer and heating/fan space where fresh air is sucked in under negative pressure, allowing for streamlined air flow and heat exchanger integration, with exhaust air extraction at the lowest energy point to minimize energy loss, and segmented airflow management to optimize energy balance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of energy
If exhaust air is extracted from the dryer chamber directly, then moisture removal is achieved, but the suction effect disrupts air circulation and creates complex sealing requirements
Solution Approach 1:
The patent introduces an intermediate chamber between the dryer chamber and the exhaust air extraction system. This intermediate chamber acts as a buffer that allows exhaust air to be extracted without creating direct suction effects in the dryer chamber, thereby maintaining proper air circulation while still achieving moisture removal. The intermediate chamber decouples the exhaust extraction function from the drying process, eliminating the need for complex sealing arrangements.
2Loss of energy
If fresh air duct is coupled with heat exchanger, then energy efficiency is improved, but space constraints prevent installation between processing units
Solution Approach 1:
The patent combines the intermediate chamber with the heat exchanger integration, creating a compact assembly where the fresh air duct and heat exchanger are merged into the intermediate chamber structure. This allows the heat recovery function to be implemented within the existing space of the intermediate chamber, eliminating the need for additional space between processing units while still achieving energy efficiency improvements through heat exchange between exhaust and fresh air.
3Ease of operation
If fresh air circulation occurs at right angle to drum axis, then exhaust air extraction is simplified, but air circulation within dryer chamber is disrupted
Solution Approach 1:
The patent segments the air flow paths by creating distinct zones: the dryer chamber maintains its original air circulation pattern for effective drying, while the intermediate chamber handles the fresh air supply and exhaust air extraction separately. This segmentation allows the intermediate chamber to be configured for easy exhaust extraction without affecting the optimized air circulation pattern within the dryer chamber itself.
4Productivity
If multiple drums are arranged in staggered series, then drying capacity is increased, but space requirements and ducting complexity increase
Solution Approach 1:
The intermediate chamber serves multiple functions simultaneously: it acts as a buffer for exhaust air extraction, a supply chamber for fresh air, and an integration point for the heat exchanger. This multi-functionality allows the system to handle increased drying capacity from multiple drums without proportionally increasing the overall volume or ducting complexity, as the intermediate chamber consolidates multiple air handling functions into a single space.
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 enhances energy efficiency by reducing flow rate losses, enabling compact dryer design and optimal heat recovery, while allowing for flexible installation between processing units without space constraints.
Implementation Method 1
a heat exchanger to warm the fresh air
Implementation Method 2
heating elements for both the fresh air and the drying air are located within the heating and fan compartment
Data Source
Figure 1
Figure 2
Figure 3
AI summary
The invention relates to a dryer for a textile fabric web, comprising a dryer chamber (2) and having at least one drum (3a) which is arranged in the dryer chamber (2) and around at least part of which the fabric web (5) is wrapped, wherein heated drying air flows through the fabric web (5) and is discharged via an interior chamber of the drum (3a), characterized in that the dryer (1) has a separate additional compartment (10) via which fresh air (11) is supplied and exhaust air (13) is discharged.