Moisture Barrier for Cardboard Electrofilter Precipitator Edges
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Solution Overview
Problem
Moisture penetration through the edges of the cardboard precipitator reduces its separating capacity, particularly during cleaning when water or other liquids come into contact with the edge sections.
Innovation Solution
Applying a moisture-resistant varnish to the end surfaces of the tightly wound paper bands coated with a thin polyethylene plastic layer, ensuring the varnish penetrates into the edge parts without adhering to the plastic, creating an effective moisture barrier that prevents moisture ingress.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the precipitator is cleaned with water or other liquids, then cleaning effectiveness is improved, but moisture penetrates through the edges reducing separating capacity
Solution Approach 1:
The patent applies a moisture barrier specifically to the edge sections of the precipitator where moisture penetration occurs, rather than coating the entire surface. This localized treatment allows the edge sections to resist moisture while the rest of the precipitator maintains its cleaning functionality and electrostatic properties.
Solution Approach 2:
The moisture barrier is applied in advance to prevent moisture penetration before cleaning operations occur. This preliminary protective measure counteracts the harmful effect of moisture ingress that would otherwise occur during subsequent cleaning with water or liquids.
2Reliability
If a moisture barrier is applied to prevent moisture penetration, then reliability is improved, but device complexity increases
Solution Approach 1:
The moisture barrier is applied only to the edge sections of the precipitator, creating a localized protective layer rather than a universal coating. This reduces the overall complexity of the device by limiting the barrier application to specific areas where it is most needed.
Solution Approach 2:
The patent applies a partial coating to the edge sections rather than a complete coating of the entire precipitator surface. This partial action provides sufficient moisture protection at the critical edge areas without the complexity and material requirements of a full-surface coating.
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 method effectively seals the edge sections of the precipitator, maintaining its electrostatic separating capacity and preventing moisture penetration, even during cleaning processes.
Implementation Method 1
the varnish penetrates into the edge parts without adhering to the plastic, creating an effective moisture barrier
Data Source
Figure 1~2
AI summary
The present invention concerns a method for applying a moisture barrier to a precipitator of cardboard for a two-step electrofilter, wherein the precipitator consists of at least two paper bands (5) that constitute electrode elements in the precipitator, which paper bands (5) are multiply wound around a center axis of the precipitator, wherein the paper bands (5) exhibit a thin plastic layer with a thickness of 5-50 micrometers on their lateral surfaces (4), and where proximate electrode elements are arranged at a distance from one another in the radial direction of the precipitator. The invention also concerns a material for fabricating a precipitator of cardboard for a two-step electrofilter. The method is characterized according to the present invention in that edge parts (6) of the paper bands (5) have a moisture-resistant substance applied to them.