Copper Sulfide Antibacterial Filter Manufacturing
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Solution Overview
Problem
Existing antibacterial filters face challenges with high costs, toxicity, and limited processing ease, particularly with silver and sulfur compounds, which hinder their widespread application in effectively removing airborne microorganisms and odors.
Innovation Solution
A copper-based filter using copper sulfide (CuS) applied to a porous medium, with a chemical structure of CuxMy (where M is S, F, or Cl) and a porosity of 10-40%, allowing for easy processing and non-toxicity while enhancing antibacterial and deodorizing activities.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If silver is used as an antibacterial preparation, then high antibacterial effect is achieved, but cost becomes excessively high
Solution Approach 1:
The patent replaces expensive silver with a cheaper alternative material that provides comparable antibacterial effectiveness. The invention uses a cost-effective antibacterial preparation that maintains the required antibacterial effect while significantly reducing manufacturing costs, making the filter economically viable for widespread use.
Solution Approach 2:
The patent changes the material parameter from silver to an alternative substance that offers similar antibacterial properties but at lower cost. By adjusting the material composition and concentration parameters, the invention achieves the desired antibacterial effect while optimizing cost efficiency.
2Reliability
If sulfur is applied for antibacterial activity, then high antibacterial activity is achieved, but toxic properties and difficulty of processing arise
Solution Approach 1:
The patent replaces toxic sulfur with a non-toxic alternative material that provides equivalent or superior antibacterial activity. The invention uses a safer substance that eliminates the harmful toxic properties associated with sulfur while maintaining effective antibacterial protection.
Solution Approach 2:
The patent converts the harmful toxic properties of sulfur into a beneficial non-toxic alternative. By selecting a material that is inherently non-toxic yet maintains antibacterial effectiveness, the invention transforms the harmful aspect into a safe and desirable characteristic for indoor air filtration.
3Reliability
If sulfur is applied for antibacterial activity, then high antibacterial activity is achieved, but processing difficulty increases
Solution Approach 1:
The patent replaces difficult-to-process sulfur with a material that is easier to handle and apply. The alternative antibacterial preparation offers improved processability, allowing for simpler application methods and more straightforward manufacturing procedures while maintaining high antibacterial activity.
4Productivity
If microorganisms are removed through air filters, then dust elimination is achieved, but microorganisms proliferate on the filter surface and produce harmful volatile organic compounds
Solution Approach 1:
The patent converts the harmful proliferation of microorganisms on the filter surface into a beneficial antibacterial effect. By incorporating antibacterial preparations into the filter structure, the invention transforms the filter from a breeding ground for harmful organisms into an active barrier that prevents microbial growth and eliminates the generation of volatile organic compounds.
Solution Approach 2:
The patent applies antibacterial preparations in advance to the filter surface to prevent microbial proliferation before it occurs. This preliminary protective action stops the growth of harmful microorganisms and prevents the formation of volatile organic compounds, addressing the problem proactively rather than reactively.
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 copper sulfide filter achieves antibacterial activity of 1×10^4 to 1×10^6 counts/ml and deodorizing activity of 90-98%, providing a cost-effective and non-toxic solution for improving air quality by effectively removing microorganisms and odors.
Implementation Method 1
copper sulfide applied on the surface of the porous medium by coating or dispersed in the porous medium
Implementation Method 2
a porous medium containing minute pores available for a fluid to pass through
Data Source
AI summary
Provided is a method of manufacturing an antibacterial filter including copper-based compound particles. The method comprises the steps of preparing a porous medium containing minute pores allowing a fluid to pass therethrough and coating copper sulfide particles on inner surfaces of the minute pores of the porous medium. The sulfur compound particles have a chemical structure of CuxSy (wherein x/y=0.8 to 1.5).