Symmetric Air Supply and Exhaust for Membrane Drying
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing drying apparatuses for sheet-shaped materials, such as separators for secondary batteries, face issues with uneven pressure distribution and shaking during the drying process, leading to potential creases and uneven drying due to unbalanced air flow and single-sided air supply and exhaust configurations.
Innovation Solution
A drying apparatus with symmetrically arranged air suppliers and air exhausters along the direction of the sheet-shaped material, forming alternating positive and negative pressure zones to maintain uniform pressure and prevent shaking, utilizing perforated plates for uniform air distribution and controlled airflow to ensure even drying.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If single-sided air supply and exhaust configuration is used, then device complexity is reduced, but pressure distribution becomes uneven causing shaking and creases
Solution Approach 1:
The patent applies asymmetry by using symmetric arrangement of air suppliers and exhausters on both sides of the sheet-shaped material. This creates balanced pressure distribution (positive pressure zones from air suppliers and negative pressure zones from exhausters) that prevents shaking and creases during drying, resolving the contradiction between simple configuration and uniform pressure distribution.
2Productivity
If unbalanced air flow is used, then drying speed is improved, but uneven drying and creases occur
Solution Approach 1:
The patent applies local quality by creating different pressure zones at different locations - positive pressure zones near air suppliers and negative pressure zones near exhausters. This localized pressure control ensures balanced air flow across the entire sheet surface, preventing uneven drying and creases while maintaining high drying efficiency through optimized airflow paths.
3Stability of the object's composition
If symmetric air suppliers and exhausters are arranged on both sides, then pressure distribution uniformity is improved, but device complexity increases
Solution Approach 1:
The patent merges air supply and exhaust functions into a coordinated symmetric system where air suppliers and exhausters work together on both sides of the material. This integration creates balanced pressure zones that stabilize the material during drying, achieving uniform pressure distribution through the combined action of multiple components rather than isolated 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
The apparatus effectively prevents the sheet-shaped material from shaking and ensures uniform drying, reducing the likelihood of creases and uneven drying, by maintaining constant pressure distribution across both surfaces, thus improving the drying process efficiency.
Implementation Method 1
forming positive pressure zones with a plurality of air suppliers that are arranged along a predetermined direction such that the positive pressure zones are on a surface of a porous membrane being carried in the predetermined direction within a housing
Implementation Method 2
forming negative pressure zones with a plurality of air exhausters that are arranged along the predetermined direction, wherein the positive pressure zones are symmetrically formed at positions facing each other on opposite sides of the porous membrane
Implementation Method 3
an air exhauster to exhaust air along with volatilized solvent generated while the heat resistant layer is dried
Data Source
AI summary
A drying apparatus that dries a porous membrane that is carryable along a predetermined direction and a drying method, the drying apparatus including a housing; a plurality of air suppliers arranged in the housing along the predetermined direction so as to inject air toward the porous membrane; and a plurality of air exhausters arranged in the housing along the predetermined direction so as to exhaust air that has been injected from the air suppliers to an exterior of the housing, wherein the plurality of air suppliers are symmetrically arranged with one another at opposite sides of the porous membrane to face each other with the porous membrane disposable therebetween.